OREC HR662 User manual

INSTRUCTION MANUAL
HR662/802/672/812
HRC662/672/802/812
Grassland walk behind flail mower
Read this instruction manual carefully before any use of the machine, keep it as a reference.For any
question about this manual, please report to your OREC dealer or to the distributor of your country or
to : http://www.orec-jp.com.
Update : August 2018

“Only the English version of this manual can be used as a reference.”
INTRODUCTION
Forword to the user
Read this manual before any use of your mower, only the herein instructions shall help you to achieve
an efficient and safe work.
A safe use will only result from the manner you will use the machine in accordance with the
restrictions described in this manual. Thus, you must know and follow all the safety measures in this
manual and those relating to the use of your mower.
The MOWER that you have just bought has been designed and manufactured for your entire
satisfaction. As any other mechanical machine, it requires a proper maintenance and must be kept
clean. Grease the machine like indicated. Follow the rules and safety indications as described in this
manual and as showed on the preventive instruction stickers.
About maintenance, always mind that your OREC dealer has the skills, the genuine parts and the
necessary tools to solve the possible problems.
Use only the OREC original parts : “ non genuine ” parts will not assure you of a correct and safe
working and are likely to make the guarantee null and void. Write the name and the serial number of
your machine hereunder :
MODEL :.......................................................................................
SERIAL NUMBER (refer to the pictures herein) :.........................
Always mention these informations to your dealer in order to obtain the right parts.
Concerned about constant progress, OREC keeps the right to modify the machines without being
compelled to modify those already sold.
The illustrations and characteristics in this manual might lightely differ from your machine because of
the constant improvements made by our production department.
In this manual, the left and the right hand or the rear and the front position are determined according
to the mower handlebar.
All along this manual the word IMPORTANT is used to indicate that a fault might cause damage to
the machine. The words WARNING, CAUTION and DANGER are used with the “ safety/warning ”
pictogram (triangle with an exclamation mark) in order to indicate a hazard for your safety.
This symbol indicates that you must be very attentive because your safety is at stake. It reminds that
you must follow the safety instructions and pay attention to hazardous operations that might cause
injuries.
WARNING
Reminds the safety rules that might cause injury if they are not respected
CAUTION
Remembers to pay attention to a real danger that is likely to cause injury or even death if no proper
precaution is taken.
DANGER
Indicates a major hazard that is most likely to cause irremediable injury or death if the right
precautions are not taken.

CONTENTS
INTRODUCTION ................................................................................................................................................2
CONTENTS........................................................................................................................................................3
SPECIFICATIONS..............................................................................................................................................3
CHECK LIST.......................................................................................................................................................4
SAFETY RULES.................................................................................................................................................4
DIFFERENT PARTS OF THE MOWER.............................................................................................................6
SAFETY INSTRUCTION STICKERS .................................................................................................................7
CONTROLS........................................................................................................................................................9
OPERATION.....................................................................................................................................................11
MAINTENANCE OPERATIONS TO BE CARRIED OUT BY THE USER ........................................................13
BREAKDOWNS AND SOLUTIONS .................................................................................................................20
TIGHTENING TORQUES (Nm)........................................................................................................................20
EC CONFORMITY DECLARATION.................................................................................................................21
MEASUREMENT OF VIBRATIONS.................................................................................................................21
EC CONFORMITY DECLARATION.................................................................................................................22
MEASUREMENT OF VIBRATIONS.................................................................................................................22
EC CONFORMITY DECLARATION.................................................................................................................23
MEASUREMENT OF VIBRATIONS.................................................................................................................23
EC CONFORMITY DECLARATION.................................................................................................................24
MEASUREMENT OF VIBRATIONS.................................................................................................................24
EC CONFORMITY DECLARATION.................................................................................................................25
MEASUREMENT OF VIBRATIONS.................................................................................................................25
EC CONFORMITY DECLARATION.................................................................................................................26
MEASUREMENT OF VIBRATIONS.................................................................................................................26
EC CONFORMITY DECLARATION.................................................................................................................27
MEASUREMENT OF VIBRATIONS.................................................................................................................27
EC CONFORMITY DECLARATION.................................................................................................................28
MEASUREMENT OF VIBRATIONS.................................................................................................................28
LIMITED WARRANTY......................................................................................................................................29
NOTES..............................................................................................................................................................29
SPECIFICATIONS
Model
HR662/672
HRC662/672
HR802/812
HRC802/812
Engine
HONDA GX270
HONDA GX270
HONDA GX340
HONDA GX340
Engine power (HP)
8.6Hp
8.6Hp
10.9Hp
10.9Hp
Transmission
Mechanical
Mechanical
Mechanical
Mechanical
Forward speed
(km/h)
(1) 0.94
(2) 1.96
(3) 3.45
(1) 0.90
(2) 1.88
(3) 3.31
(1) 0.94
(2) 1.96
(3) 3.45
(1) 0.90
(2) 1.88
(3) 3.32
Reverse speed
(km/h)
0.94
0.90
0.94
0.90
Cutting width (mm)
650
650
800
800
Height of cut (mm)
50 to 110
50 to 110
50 to 110
50 to 110
Weight (kg)
160
170
160
195
Fuel tank capacity
(liters)
5.3
HRC662 / 5.3
HRC672 / 4.1
6.1
HRC802 / 6.1
HRC812 / 5.3
Blade transmission
belts
belts
belts
belts
Blade engagement
belt tension
belt tension
belt tension
belt tension

blade speed (rpm)
3075
3075
3075
3075
Over all width (mm)
815
815
950
950
CHECK LIST
INSTRUCTIONS TO THE DEALER
• The assembling, the installation and the first application of the machine is under the OREC dealer’s
responsability.
• Read the instruction manual as well as the safety measures. Check that all the before delivery and
at delivery check points specified in the following lists have been verified and possibly modified
before delivering the machine to its owner.
CHECKS BEFORE DELIVERY
• Check that all the shields, grids and safety guards are in place and in a good condition.
• Check that the hydraulic hoses are in place and in a good condition. Replace them if necessary.
• Check that there is no oil leak, repair if necessary.
• Check that the safety instruction stickers are in place and in a good condition. Replace them if
necessary.
• Check that all the bolts and screws are properly tightened with the right torque (refer to torque
chart).
• Protect the grease nipples by coating them with grease and lubricate the machine.
• Check that the machine can work properly.
CHECKS ON DELIVERY
Show the user how to perform the adjustments.
Explain to the user the importance of the lubrication and show him the different greasing points on
the machine.
Show him the safety devices, grids, guards and the optional equipments.
Give the instruction manual to the customer, ask him to read it carefully.
SAFETY RULES
CAUTION
Some of the illustrations show the machine with no guard, no shield. Never use the machine
without these devices.
Learn to stop the machine in case emergency.
Read this manual.
Do not let anybody use the machine before having read and understood this
manual.
Do not let children use the machine.
Do not wear loose clothes. They might be grasped by moving parts.
Always wear protection equipments for when using the machine.
Only work during daylight or with a good artificial light.
Check that the safety instruction stickers are in place and in a good condition.
Keep the machine free from debris or mud.
Check that the machine can work properly before any use.

Check that all the shields, grids and safety guards are in place and in a good state.
It is strictly forbidden to carry persons or animals onto the machine during the work or during the
transportation.
Never stop or start roughly when working on a slope. Never use the machine to work on a stepping
terrain.
Reduce the ground speed when running on a slope and when turning
straight in order to prevent from any risk of losing control.
Be very careful when bordering ditches.
Stop the engine, and remove the sparking plug ignition cover before any
intervention on the machine.
Never work under the machine or its parts when lifted, unless they are
blocked and maintained into position with sufficient security.
When running on a slope, always work going up or down but never
across the slope.
Steer clear of unsteady embankments, holes or rocks. They might be dangerous during
manœuvres or transport.
Keep away from electric wires and obstacles. A contact with electric wires cause electrocution and
death.
Stop the machine progressively when lifting or lowering the machine.
When stopping the work, stop the engine and remove the sparking plug ignition cover before
leaving the mower.
Engage all the safety equipments.
Move the controls only when correctly sat down in the mower
Visually check hydraulic leaks and if some parts are faulty or missing. Repair before use.
Never change the adjusment of the regulator, it is set in the factory. Unsetting this valve would
cause failures.
Ensure that the user of the machine has already read and understood
this manual and that he is aware of all the safety instructions before any
use.
Always use a chuck and bronze hammer when replacing or intervening
on the pins and bolts at the end of rams, rod … etc in order to avoid the
projection of metal fragments.
Clear the mowing path from foreign objects, stones, woods, cans, bottle,
pieces of steel, wich can ne thrown by the mower.
Gasoline is hightly flammable :
- Refuel outside, never smoke when refuelling
- Never refuel when the engine is running, stop the engine before refuelling
- Allowed the engine to cool down before refuelling
- If gasoline has spilled, do not try to start engine before the spilled gasoline has been wiped.
- Check that the fuel cap is correrctly installed after refuelling


DIFFERENT PARTS OF THE MOWER
Side clutch
lever
Side clutch
lever
Handlebar
adjustment
UP/DOWN
Cutting
height
adjustment
Front
Driving clutch
lever
Left
Right
Rear
Throttle
Air filter
Starter
Fuel cock
Blade clutch
locking lever
Fuel tank
Handlebar
adjustment
(L /R)
Blade tension
lever

SAFETY INSTRUCTION STICKERS
Note their location and replace them immediately in case of damage or when missing
Read owner’s manual
Beware of thrown objects
Keep away from the
machine
Unplug the spark plug wire before
perform maintenance, read owner’s
manual
Read owner’s manual to be aware
of the risks like burns, breathing
intoxication, and fire
No hands or feet under the
mowing deck

SAFETY INSTRUCTION STICKERS (continued)
No hands or feet under
the mowing deck
Do not exceed 15°
slopes
Always wear
protective equipment
against dust, noise
and wear glasses
Beware of rotative belt under the
shield

CONTROLS
DRIVING CLUTCH LEVER
Push the lever(1, Figure 1) down to the handlebar to make the
machine moving. Release the lever, then the machine stops.
BLADE CLUTCH LEVER
Blade clutch lever makes the engine drive the blade to
mow.Press the lever (2,Figure 1) then pull the lever (3,Figure
1) to make the blade turning.
Release the lever, then the rotor stops.
WARNING
Never try to start or stop the engine with blade engaged
THROTTLE LEVER
Push the throttle lever(4, Figure 1) to left to increase engine speed, push the throttle lever to right to
decrease engine speed to idle rpm. Always operate mower at full engine speed.
SIDE CLUTCH LEVERS
The side clutch levers (5, Figure 1) are used to change the direction of the machine. Press right lever
to turn right and left lever to turn left. To move the machine when engine is cut off, press the both
levers.
DANGER
Do not press the two levers in slopes when engine is running.
HANDLEBAR ADJUSTMENT LEVERS
Grip the lever ( 6, Figure1) to move handelbar right and left.
And grip the lever ( 7, Figure 1) to move handlebar up/dpwn.
SPEED LEVER
This lever (Figure 2) allows to select 3 forward speeds (1, 2, 3), 1
reverse speed (R) or 3 neutral location (N).
WARNING
Operate speed and range lever only with the machine stopped
and engine at idle speed.
CHOKE LEVER (1,FIGURE 3)
Push the lever to 2 to operate the choke to start engine cold, when
engine has start release it to 3.
IMPORTANT
Do not use the choke when the engine is hot
Figure 2
Figure 3
4
3
5
2
1
7
Figure 3
6
Figure 1
3
2
1

FUEL COCK
The fuel cock (1, Figure 4) is closed when machine is not in use. Push
the lever to 2 to open fuel cock and to 3 to close cock.
HEIGHT OF CUT CONTROL
Height of cut can be setted by turning the crank-lever (1,Figure 5)
clockwise to increase the height of cut and anti- clockwise to decrease
the height of cut.
WARNING
Always perform this adjustment
engine off and sparking plug cover
unplug
When cutting in low position, power
needed and thrown objects are more
important. Cutting low can cause
damage to the machine and injury.
ENGINE ON/OFF SWITCH
This switch is located on the left side of the handlebar. It allows to run
the engine when positionned on « ON » and stop the engine when
positionned on “OFF”.(Figure 6) Use this switch to start or stop the
engine.
ENGINE :
Refer to engine manual delivered with the machine.
CRAWLER LOCK LEVER (OPTIONAL) (HRC MODEL ONLY)
This lever is located on the left side of handlebar.
It is used to function for uplift prevention of machine by
locking both of crawlers.
When the crawler lock kit is installed, crawler is locked.
Grip the lever (1, Figure 7) until it clicks into place and is
locked by lever (2, Figure 7). In this moment, crawler is
unlocked.
Grip lever (1, Figure 7) again with lever (2, Figure 7) and
release it. Then crawler kit pin should be fit into one
position. Crawler should be locked.
CAUTION
Make sure that the crawler kit pin is set into the hole when
machine is used with crawler lock kit.
When crawler is locked, turning radius would be slightly bigger than
normal operation.
Figure 5
Figure 6
1
3
2
Figure 4
Figure 7
1
2