Jonsered Front Rider FR13 Instruction manual

Workshop Manual 108 88 15-26

English – 1
Safety regulations ...............................................2
General instructions .........................................2
Special instructions ..........................................2
Special tools ........................................................3
Technical data .....................................................4
Play ..................................................................4
Tightening moments.........................................4
Mowing deck ....................................................5
Control points...................................................5
Delivery and dealer service................................6
Maintenance schedule........................................8
Delivery measures ..............................................9
To our dealer ....................................................9
Packaging and unpacking................................9
Battery............................................................10
Steering wheel ............................................... 11
Tow plate ........................................................ 11
Oil levels ........................................................ 11
Wheels ...........................................................12
Test running ...................................................13
Speed regulator .............................................14
Administration ................................................14
Design and function..........................................15
General ..........................................................15
Serial number.................................................15
Engine............................................................16
Steering..........................................................17
Driving............................................................18
Mowing deck ..................................................19
Reparation instructions....................................20
Removing engine ...........................................20
Replacing engine ...........................................22
Changing engine oil .......................................25
Checking and adjusting steering wires ..........25
Replacing steering wires................................26
Removal/installation of steering axle .............26
Removal/installation of wire wheel.................27
Checking and adjusting brake wire ................28
Checking and adjusting gear control..............29
Checking and adjusting throttle control..........29
Checking and adjusting freewheel clutch.......30
Replacing articulated steering bearing...........30
Removal of swing axle ...................................32
Replacing bushings........................................32
Installation of swing axle ................................33
Removal/installation of gear box....................34
Removal/installation of hydrostatic
transmission...................................................34
Replacing hydrostat. trans. axle seals ...........35
Input axle ..................................................35
Outgoing axles ..........................................36
Replacing hydrostatic transmission wire........37
Bleeding hydrostatic transmission oil system 41
Adjustment of transmission neutral position ..41
Transmission maintenance ............................42
Oil change......................................................43
Removal of belt ..............................................43
Checking and adjusting cutting unit ground
pressure .........................................................44
Checking and adjusting parallelism of the
mowing deck ..................................................44
Adjusting cutting height area..........................45
Adjusting cutting height..................................45
Removal of mowing deck FRM 13 A..............46
Removal of mowing deck FR 13 ....................48
Replacing cutting unit belts ............................49
Replacing belt on FR 13 ...........................49
Replacing belt on FRM 13 A .....................49
Replacing breakpin FRM 13 A .......................50
Removal of blades with bearings ...................50
Grinding and balancing of blades ..................52
Electrical system...............................................53
Circuit diagram FR 13 ....................................53
Circuit diagram FRM 13 A..............................54
Inspection of safety system............................55
Troubleshooting chart ......................................56
Workshop manual
Jonsered
FR13, FRM 13 A
Contents

2– English
Safety regulations
General instructions
The workshop handbook is written for personnel who
are assumed to have general ride-on mower repara-
tion and service know-how.
The workshop where the ride-on mower is repaired
should be equipped with safety devices in
accordance with local regulations.
No-one should attempt to repair the ride-on mower
without having first read and understood the contents
of this handbook.
The machine is tested for safety and approved only
for equipment supplied or recommended by the
manufacturer.
The below-mentioned boxes are included in this
workshop handbook, as is appropriate.
Special instructions
The fuel used in the ride-on mower has the
following hazardous characteristics:
• Toxic fluid and fumes
• Can cause eye and skin complaints
• Can cause breathing difficulties
• Highly flammable
When using compressed air, do not direct the
compressed air stream towards your, or anybody
else's, body. Air can be forced into the blood
stream, thereby constituting a danger to life .
Use hearing protectors when test driving.
After test driving, do not touch the silencer before it
has cooled down. Risk of burn injuries. This
especially applies if the ride-on mower is equipped
with a catalytic converter. If consumed, the lining on
and in the catalytic converter element is dangerous
to health. Use protective gloves when working with
the catalytic converter/silencer.
The blades are sharp and can cause cutting
injuries. Always use protective gloves when you are
handling the blades.
Use protective glasses when working with the
mowing deck. If the belt's tension spring comes off
and flies upwards, this can cause injury to persons.
Be extra careful when handling battery acid. Spilling
acid on the skin can cause severe burn injuries. If
acid is spilt on the skin, rinse immediately with
water. If acid gets into the eyes, this can cause
blindness. Contact a doctor.
Be careful with the maintenance of the battery.
Explosive gas is formed in the battery. Never
handle the battery when smoking or in the vicinity of
naked flames or sparks. Otherwise, the battery can
explode and cause severe injuries.
IMPORTANT INFORMATION
This box indicates a risk of damage to the
material if the instructions are not
followed.
WARNING!
The warning box indicates a
risk of injury to persons if the
instructions are not followed.

English – 3
506 66 48-01 506 79 06-01
506 57 00-01 506 89 92-01 506 89 93-01
Special tools
The following special tools are used when working on the ride-on mower.
506 57 00-01 Wheel puller for FR 13 and FRM 13 A.
506 66 48-01 Puller for engine pulley.
506 79 06-01 Ball-ended Allen key 3/8" to unscrew the engine pulley socket head cap screw (Briggs &
Stratton).
506 89 92-01 Holder-on for engine pulley removal.
506 89 93-01 Tool for removing steer return spring.

4– English
Technical data
Tightening moments
Carrier steering 5–10 Nm
Pulley steering wire 20–30 Nm
Belt wheel 35–40 Nm
Blades 45–50 Nm
Blade bearings 20–25 Nm
Belt tensioner wheel 15–25 Nm
Holder screws, engine 20–25 Nm
Holder screws, gear box 20–25 Nm
Brake drum bolts hydrostatic transmission 27 Nm
Engine pulley 70–80 Nm
Wheel axle nut 100–150 Nm
Dimensions: FR 13 FRM 13 A
Length 2 090 mm 2 150 mm
Width 880 mm 880 mm
Height (over steering wheel) 1 070 mm 1 070 m
Weight 197 kg 197 kg
Track front 720 mm 720 mm
Track rear 620 mm 630 mm
Wheel base 860 mm 850 mm
Tyre size 16 x 6.50 x 8 16 x 6.50 x 8
Air pressure 60 kPa 60 kPa
Max. gradient 15° 15°
Engine: FR 13 FRM 13 A
Manufacture Briggs & Stratton Briggs & Stratton
model 286707 model 286707
Power 9,2/12,5 kW/hp 9,2/12,5 kW/hp
Displacement 465 cm3465 cm3
Fuel min. 85 octane unleaded min. 85 octane unleaded
Tank capacity 7 litres 7 litres
Oil SAE 30 or SAE 10W/30 SAE 30 or SAE 10W/30
class SF-CC class SF-CC
Oil capacity 1,4 litres 1,4 litres
Start Electric start Electric start
Gearbox: FR 13 FRM 13 A
Manufacture Peerless MST 205 Tuff Torq K46
Oil SAE 10W/30
class SF-CC
Oil capacity 2,2 litres
Gears, forwards 5
Gears, reverse 1
Electrical system FR 13 FRM 13 A
Type 12 V, negative earth 12 V, negative earth
Battery 12 V, 24 Ah 12 V, 24 Ah
Main fuse Flat pin yoke 15 A Flat pin yoke 15 A
Spark plug Champion CJ8 or J8 Champion CJ8 or J8
Spark plug gap 0,7 - 0,8 mm 0,7 - 0,8 mm
Play
Clutch wire FR 13: 8–10 mm
Brake control lever against stop bolt FR 13: 0–1 mm
Brake control lever FR 13: 7–9 mm
Brake wires FR 13, FRM 13 A: 1 mm
Wires, hydrostatic transmission pedals
FRM 13 A: 0 mm

English – 5
Technical data
Control points
Mowing deck parallelism with cutting height in pos. 1: ± 2 mm
Cutting height control in pos. 1: FR 13 = 37 ± 2 mm
FRM 13 A = 45 ± 2 mm
Synchronous transmission belt tension FRM 13 A at 7 N force, impression: 8 mm
Dist. between support plate and drive belt: 3–6 mm
Distance belt tensioner control lever
and belt guide, disengaged unit: 17 ± 5 mm
Mowing deck: FR 13 FRM 13 A
Cutting width 850 mm 900 mm
Cutting height 40-90 mm 45-95 mm
Blade length 340 mm 440 mm
Noise level 100 dB(A) 100 dB(A)
Weight 28,0 kg 38,0 kg
Overall width 950 mm 1 000 mm

6–English
Delivery and dealer service
Pre-delivery service
1. Top up battery with acid and recharge for four hours.
2. Fit the steering wheel, tow plate, and where appropriate other parts.
3. Adjust cutting unit:
Adjust lift springs (effective weight of cutting unit should be
12–15 kg, or set to maximum lift if brush is to be fitted). (Only applies to FRM 13 A.)
Adjust cutting unit so that rear edge is about 2–4 mm higher than front edge.
Adjust cutting unit height setting so that cutting height limit is 5 mm above the frame of the unit at the
lowest cutting height.
4. Check that engine has correct amount of oil.
5. Check that the right amount of oil is in the transmission. (Not FR 13)
6. Check and adjust tyre pressure (60 kPa, 0.6 bar).
7. Connect battery.
8. Fill with fuel and start engine.
9. Check that machine does not move in neutral. (Not FR 13)
10. Check:
Forward drive.
Reverse drive.
Operation of blades.
Seat safety switch.
Lift lever safety switch.
11. Check engine revs 2,900–3,100 rpm.
12. Tell customer about:
Need and benefits of following the service schedule.
Need and benefits of having machine serviced every 300 hours.
The effects of maintenance on the machine’s second-hand value.
Application areas for mulching.
13. Complete proof of sale, etc.
After first 5 hours
1. Change engine oil.

English –7
Delivery and dealer service
Dealer service
25 hours service
1. Change the engine oil.
2. Clean/replace the airfilter’s pre-filter or oil-foam
element, if fitted. (More frequent intervals in
dusty operating conditions.)
3. Clean/replace the air filter’s filter cartridge (25
hours, 100 hours if pre-filter is fitted).
(More frequent intervals in dusty operating
conditions.)
4. Check the tyre pressures.
5. Check the mower deck (visual inspection)
6. Lubricate the belt tensioner.
7. Lubricate joints and axles.
8. Adjust the brake (FR 13).
9. Check the V-belts.
10. Clean the engine’s cooling air intake.
11. Check/clean the hydrostatic transmission
gear’s cooling fins.
50 hours service
1. Carry out 25 hours service as above.
2. Check the oil level in the transmission.
(FRM 13 A).
3. Check/adjust the parking brake.
(FRM 13 A).
4. Check/adjust the throttle wire.
5. Clean the cooling fins on the engine and
transmission.
6. Check/adjust the settings on the mowing deck.
7. Inspect the flame guard/spark arrester.
(extra equipment)
100 hours service
1. Carry out 25 hours service as above.
2. Carry out 50 hours service as above.
3. Replace the air filter’s pre-filter and paper filter.
4. Replace the fuel filter in the pipe.
5. Clean/replace the spark plug.
300 hours service
1. Carry out 25 hours service as above.
2. Carry out 50 hours service as above.
3. Carry out 100 hours service as above.
4. Check the valve clearance on the engine.
At least once a season
1. Change the engine oil (25 hours).
2. Clean/replace the air filter’s pre-filter or oil-
foam element, if fitted.
3. Clean/change the air filter’s filter cartridge.
4. Check/adjust the settings on the mowing deck.
5. Adjust the parking brake.
6. Inspect the flame guard/spark arrester (extra
equipment).
7. Clean/replace the spark plug.
8. Replace the fuel filter in the pipe.
9. Clean the cooling fins on the engine and
transmission.
10. Check the valve clearance on the engine.
11. 300 hours service should be carried out by an
authorised service workshop.

8–English
1) First change after 5 hours. 2) Cleaning and replacing should be carried out more frequently in dusty conditions. 3) The machine should
be lubricated twice a week if used daily. 4) Carried out by authorised service workshop.
WARNING!
No service procedures must be conducted on the engine or cutting unit unless:
●= Described in this Workshop Manual.
❍= Not described in this Workshop Manual.
▼= Described in the Operating Instructions.
Maintenance interval in
hours
• The engine is switched off.
• The ignition key is removed.
• The ignition cables are removed
from the plugs.
• The parking brake is applied.
• The cutting unit is disengaged.
Maintenance schedule
The following is a list of the maintenance which should be conducted on the machine. Most of the points that
are not covered by this workshop manual are covered by the operator’s manual.
50 100
Page
25
Maintenance
Daily
maintenance
before
starting
Check the oil level in the engine 11 ●
Check the engine’s cooling air intake - ▼
Check the fuel pump’s air filter - ▼
Check the steering wires 25 ●
Check the brakes 28 ●
Check the battery 10 ●
Check the safety system 55 ●
Check the screws and nuts - ❍
Check if there is any fuel or oil leakage - ❍
Change the engine oil 1) 25 ●
Clean the air filter’s pre-filter (foam plastic) 2) -▼
Check the mower deck 44 ●
Check the tyre pressures (60 kPa) 12 ●
Lubricate the belt tensioner 3) -▼
Lubricate joints and axles 3) -▼
Adjust the brakes, FR 13 28 ●
Check the V-belts - ❍
Check the transmission’s cooling fins, - ❍
FRM 13 A
Check the transmission’s oil level, 43 ●
FRM 13 A
Adjust the brakes, Rider 13 and Rider 16 28 ●
Check and adjust the throttle wire 23 ●
Clean the cooling fins on the engine and transmission 2,4) -❍
Replace the air filter’s pre-filter and paper filter 2) -▼
Replace the fuel filter - ▼
Replace the spark plug - ❍
Delivery and dealer service

English –9
Delivery measures
To our dealer
Well-performed delivery service is the first step to a
functioning aftermarket. A functioning aftermarket is
in everybody’s interest:
•The customer will be satisfied with his machine.
He/she knows where to go to get help if
problems occur.
•You have a regular customer, who recommends
you and your company to other potential
customers.
•In this way we build our trademark together, and
take joint responsibility for our products and
customers.
Make sure the paper work is in good order.
Fill in the warranty and delivery documents etc. and
make sure that the customer gets the right
Operating Instructions for their machine.
Keep a customer register so that in future you can
see which machines customers have, including all
the serial numbers. This register will benefit you
when ordering spare parts and for future marketing.
In conjunction with the delivery you should also
give the customer the information required to
ensure the safe handling and care of their machine.
Pay special attention to informing the customer
about:
•Safety instructions.
•Controls. Emphasise that one does not push in
the reversing lock on FR 13 when engaging the
neutral position (start lock function).
•Checking of oil levels. Replenishing of oil, and
which type of oil is required.
•First oil change after the running-in period.
•The need and benefit of following the service
chart and leaving your machine for regular
service.
•Which fuel should be used.
•Mowing tips to get good results. Application
areas for mulching.
•The accessories available for your type of
machine.
•Warranty regulations.
•Your company, and who the customer can turn to
if problems occur.
Packaging and unpacking
The machine is normally packed using special
packaging when delivered from the factory. This
consists of a wooden bottom board with a top part
consisting of heavy-duty cardboard held together by
plastic film.
The bottom board is provided with pallet feet and
the goods can be handled with a normal fork-lift
truck from the long side. To keep the goods as level
as possible, two men should help the truck driver.
Lift the machine and drive the truck carefully.
Undo the plastic film and lift off the cardboard
sections. The machine then stands on the base
with the brakes on and secured using wooden
blocks. Check that the machine has not been
damaged during transport when the packaging is
opened. Report any damage to the transport
company in accordance with the standard routines.
The packaging should not be returned.
Parts enclosed in packaging
The following parts are enclosed in the transport box:
Number Part
1 Steering wheel with steering column tube
1 Socket head cap screw steering column
tube
1 Lock nut steering column tube
2 Support rollers (FRM 13 A)
6 Battery plugs
1 Operating Instructions
1 Operating and Maintenance
Instructions Briggs & Stratton
4 Wheels (certain markets)
WARNING!
Handle the transport box
carefully. Keep the goods as level
as possible. Use long forks when
lifting from the short side.
Lifting from the short side requires long pallet forks,
see diagram.
Delivery and dealer service

10–English
WARNING!
The battery acid is highly corrosive. Use
rubber gloves and protective glasses. Avoid
breathing in the acid fumes.
Measures for contact with acid
External: Rinse thoroughly with water.
Internal: Drink large quantities of water or
milk. Contact a doctor as soon as
possible.
Eyes: Rinse thoroughly with water.
Contact a doctor as soon asap.
The battery gives off explosive gas. Sparks,
naked flames and cigarettes must absolutely
not be in the near vicinity of the battery.
Battery
The battery is delivered dry-charged from the
factory. The cells are fitted with sealing film. The
battery plugs are packed in a plastic bag.
•Fill the battery cells slowly with battery acid to
the max. level mark on the battery container.
•Wait 20 minutes and top up with battery acid if
necessary.
•Charge the battery with 12 V max. 6 A for 4
hours.
•Check the electrolyte level and top up if
necessary with distilled water to the top level
marks on the battery container.
Put the battery in position.
Connect the battery with the screws and nuts fitted
on the battery. Brace the screws when fitting to
avoid exposing the terminals to strain.
•Black cable is connected to -.
•Red cable is connected to +.
Make sure the cables do not rub against the
material.
Fit the cover over the battery and tighten the strap.
Delivery and dealer service

English –11
ADD FULL
ADD FULL
Steering wheel
•Fit the steering wheel with the steering column
tube on the steering shaft.
•Screw in the socket head cap screw so that it
goes in the slot on the steering shaft. Work on
the steering wheel and tighten the socket head
cap screw so that it bottoms in the slot.
•Fit the lock nut on the socket head cap screw.
Tow plate
The tow plate is fitted the “wrong way round”at the
factory for transport reasons. Fit the tow plate on
the rear bumper as shown in the diagram.
Check the oil level in the engine
Check the oil level in the engine when the machine
is standing level.
Lift up the engine cover.
Loosen the dipstick and pull it out. Wipe the
dipstick and replace it.
The dipstick should be screwed fully down.
Loosen the dipstick and pull it out again. Check the
oil level.
The oil level should lie between the markings on the
dipstick. If the level is close to the “ADD”mark, top
up with oil to the “FULL”mark on the dipstick.
The oil is poured in the same hole the dipstick fits
in.
Use engine oil SAE 30 or SAE 10W-30, grade SF–
CC.
The engine takes a total of 1.4 litres of oil.
Delivery and dealer service

12–English
RIDER 850
RIDER 850
Check that there is oil in the transmission’s oil tank.
Fill if necessary with engine oil SAE 10W/30 (class
SF–CC).
Wheels
Fit the wheels (certain markets). The tyre pressures
should be 60 kPa (0.6 kp/cm 2 ) on all the wheels.
To improve the driving capacity the pressure in the
back tyres can be reduced to 40 kPa (0.4 kp/cm 2 ).
Maximum permitted pressure is 100 kPa (1.0 kp/cm
2 ).
Checking the oil level in the
transmission
(Not FR 13)
Remove the transmission cover. Loosen both
screws (one on each side) and lift off the
transmission cover.
Checking and adjusting of the mowing
deck’s ground pressure and parallelism
Carried out after checking the tyre pressures. See
respective sections in this Workshop Manual.
Delivery and dealer service
IMPORTANT INFORMATION
Check and top up with oil after each test
drive. The oil level will drop if there are
air pockets in the transmission.
IMPORTANT INFORMATION
Different pressures in the front tyres will
cause the blades to cut the grass at
different heights.

English –13
WARNING!
Petrol is highly inflammable.
Observe caution and fill up with
petrol outdoors.
Test running
Fill up with petrol. The engine should be run on the
lowest 85 octane unleaded petrol (no oil admixture).
Environmentally adapted alkylate petrol, e.g. of
Aspen brand, can be preferably used.
WARNING!
Never run the engine indoors, or
in enclosed or poorly ventilated
areas. Engine exhaust fumes
contain poisonous carbon mon-
oxide.
Start the engine.
Check that the machine is in neutral and standing
on level ground when the parking brake is released.
(Not FR 13)
Check the function of the parking brake.
Check driving forwards (1) and backwards (2).
Check that the starter does not function when any
of the hydrostatic transmission pedals are activated
(FRM 13 A) or when the gear stick is not in neutral
(FR 13).
Check that the engine stops when getting up from
the seat when any of the hydrostatic transmission
pedals are activated (FRM 13 A) or when the gear
stick is not in neutral (FR 13).
Check that the starter does not function when the
mowing unit is in its lower position.
Delivery and dealer service

14–English
Check the function of the mowing deck and that
there is no abnormal noise.
The mowing height can be regulated in 9 different
positions with the lever.
FR 13 40-90 mm,
mowing height
FRM 13 A 45-95 mm,
mowing height
Speed regulator
Check that the engine’s maximum speed is
regulated at:
FR 13 2 900-3 100 rpm
FRM 13 A 2 900-3 100 rpm
Administration
Fill in the sales certificate and customer register
etc.
Remember to fill in the serial number on page 3
and to sign the delivery service in the Operating
Instructions.
Delivery and dealer service

English –15
Design and function
General
The Jonsered FR series is a ride-on mower with a
large capacity. There are two models. FR 13 is sup-
plied with a manual gearbox and a mowing deck
with rear ejection. FRM 13 A is supplied with a hy-
drostatic transmission and mowing deck with
mulching.
FR machines feature articulated steering to facili-
tate mowing around trees and other obstacles.
They also have front mounted mowing decks for
controlled mowing and the best possible cutting
result.
In addition, the Jonsered Rider can also be
equipped with diverse accessories such as moss
rake and dozer blade, which make them flexible
working tools throughout the year.
FR 13 has a mowing deck with rear ejection. FRM 13 A has a mowing deck with mulching.
Serial number
The serial number can be found on the printed
plate attached to the front, left-hand side under the
seat. Stated on the plate, from the top are:
•The machines type designation.
•The manufacturer’s type number.
•The machine’s serial number.
State the type designation and serial number when
ordering spare parts.
The engine number is punched on a plate that is
riveted to the fan cover. The plate states:
•Model.
•Type.
•Code.
Please state these when ordering spare parts.

16–English
Design and function
The transmission’s serial number is stated on the
barcode decal located on the front of the housing
on the left-hand drive axle:
•The type designation is stated above the
barcode and starts with the letter “K”.
•The serial number is stated above the barcode
and has the prefix “s/n”.
•The manufacturer’s type number is stated under
the barcode and has the prefix “p/n”.
State the type designation and serial number when
ordering spare parts.
Engine
These Jonsered ride-on mowers have single cylin-
der, air-cooled engines from Briggs & Stratton.
More intricate engine repairs are not described in
this workshop handbook, these can instead be
read in Briggs & Stratton's own handbooks which
contain detailed information about adjusting and
repairing the engines. The handbooks can be
ordered from an authorized service workshop.
The table below includes the model numbers for
respective machines. These should be stated when
ordering the manual.
Machine B & S model no.
FR 13 286707
FRM 13 A 286707
It is important that only original spare parts are
used when repairing the engines. If other parts are
used, the guarantee shall no longer be valid.
FR 13 and FRM 13 A have single cylinder side-
valve engines of 12.5 hp (metric horsepower) with
splash lubrication.

English –17
Design and function
Steering
All the ride-on mowers in the FR-series have
articulated steering. The steering force from the
steering wheel is transferred to the rear section via
wires and a chain. This ensures that the ride-on
mower is easy to manoeuvre, as well as having
high-precision steering. It easily cuts around all
obstacles on the lawn.
The turning circle is very small thanks to the
articulated steering, the uncut circle with full lock is
only 20-30 cm.
Outline diagram of the articulated steering function.
FR-machines have a sliding bearing (1) on the
steering column.

18–English
Design and function
Driving
FRM 13 A is equipped with a hydrostatic transmis-
sion that gives the driver complete control over
driving.
FR 13 has a manual gear box with five forward
gears, neutral and one reverse gear. This gear box
is an "inline" type, which means that you can
change from neutral to fifth gear without having to
go through all the other gears.
Manual gear box on FR 13. Hydrostatic transmission on FRM 13 A.

English –19
Mowing deck
The FR-series is equipped with a front mounted
mowing deck in order to mow efficiently even in
confined areas.
FR 13 has a mowing deck with rear ejection and a
cutting width of 850 mm. FRM 13 A has a mulching
unit with a cutting width of 900 mm.
Design and function
Mowing deck with rear ejection, 850 mm.
Mowing deck with mulching 900 mm.