Robin EHO9-2D User manual

CHANGZHOU FUJI CHANGCHAI ROBIN GASOLINE ENGINE CO.,LTD
ADD: 28 CHANGJIANG NORTH ROAD, XINBEI DISTRICT
CHANGZHOU, JIANGSU, CHINA
Tel: [phone] Fax: [phone]
Http://www.fcrrobin.com
常州富士常柴罗宾汽油机有限公司
地址：中国·江苏省·常州市新北区
长江北路28号
电话：86-519-85036812 传真:86-519-5109259
Http://www.fcrrobin.com
PRINTED IN CHINA
January 2017

CONTENTS
Section Title Page
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. DISASSEMBLY AND REASSEMBLY
2-1 DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2-2 REASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2-3 BREAK-IN OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2-4 ENGINE SPEED ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4. SERVICE DATA
4-1 CLEARANCE DATA AND LIMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4-2 TORQUE SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
4-3 OIL GRADE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
The specifications and information included in this manual were in effect at the time of printing.
FUJI HEAVY INDUSTRIES LTD. reserve the right to change the specifications and to make modifications in the
course of technical progress, at anytime without notice.
No parts of this manual may be reproduced without written permission.

– 1 –
1. SPECIFICATIONS
EH09-2D
Air-Cooled, 4-Cycle, Single-Cylinder,
Horizontal P.T.O. Shaft, OHV, gasoline engine
51 x 42 (2.01 x 1.65)
86 (5.25)
8.7
1.5 (2.1) / 3600
2.1 (2.9) / 4200
4.9 (0.5) / 3600
Counter clockwise as viewed from P.T.O. shaft side
4-stroke automotive detergent oil - SAE; #20, #30 or 10W-30
API service class; SE or higher (SG, SH or SJ is recommended)
Splashing type
Over Head Valve type
Forced air cooling
0.3 (0.079)
Horizontal draft, float type Diaphragm type
Automotive unleaded gasoline
Gravity type
Flywheel magneto (solid state)
NGK: BMR4A (CHAMPION: RCJ14)
Recoil starter
Centrifugal flyweight type
Semi wet type
10.2 (22.44)
235 x 308 x 341 (9.25 x 12.13 x 13.43)
MODEL
Type
Continuous Output
Maximum Output
Direction of Rotation
Lubricant
Oil Capacity
Fuel
Spark Plug
Starting System
Dry Weight
＊Specifications are subject to change without notice
Dimensions (L x W x H)
Bore x Stroke
Piston Displacement
Compression Ratio
Maximum torque
Lubrication
Valve arrangement
Cooling system
Carburetor
Fuel feed
Method of ignition
Governor
Air Cleaner system
mm (in.)
ml (cu.in.)
kW (HP) / r.p.m.
kW (HP) / r.p.m.
N•m (kgf•m) / r.p.m.
litre (U.S. gal)
kg (lb.)
mm (in.)

– 2 –
2. DISASSEMBLY AND REASSEMBLY
2-1) DISASSEMBLY PROCEDURES
Step Parts to remove Remarks and procedures Fasteners
1
Engine oil drain (1) Remove oil drain plug and drain oil.
(2) To discharge oil quickly, remove oil
gauge.
14 mm spanner
2
Adapter and Stiffener M8 x 25 : 4 pcs.
M8 x 30 : 2 pcs.
M8 nut, washer,
spring washer : 4 pcs.
12 mm box spanner
OIL GAUGE CP
GASKET
GASKET
M8 NUT
: 4 pcs.
M8 SPRING
WASHER : 4 pcs.
M8 WASHER
: 4 pcs.
OIL DRAIN
PLUG
ADAPTER
STIFFENER
M8 x 25 BOLT AND
WASHER : 4 pcs.
M8 x 30 BOLT AND
WASHER : 2 pcs.
STEP 1
STEP 2

– 3 –
M4 TAPPING SCREW : 2 pcs.CLAMP
M8 x 35 FLANGE
BOLT : 4 pcs.
BLOWER HOUSING
STOP SWITCH
STEP 4
STEP 3
RECOIL
STARTER
M6 x 8 FLANGE
BOLT : 3 pcs.
Step Parts to remove Remarks and procedures Fasteners
3
Recoil starter Remove recoil starter from blower housing.
Be careful of pulling direction of starter rope.
M6 x 8 : 3 pcs.
10 mm box spanner
4
Blower housing Disconnect wire of stop switch first, then
remove blower housing from crankcase.
M8 x 35 : 4 pcs.
12 mm box spanner

– 4 –
Step Parts to remove Remarks and procedures Fasteners
5
Muffler and cylinder baffle Remove spark plug cap first from
spark plug, muffler and cylinder baffle.
Be careful not to lose gasket (muffler).
M8 bolt and washer : 2 pcs.
M6 x 14 : 2 pcs. (with sealant)
M8 flange nut : 2 pcs.
M6 x 14 : 1 pc.
10·12 mm spanner·box wrench
6
Air cleaner (1) Remove cleaner cover first from cleaner
base, element.
(2) Remove breather pipe from cleaner base
and rocker cover.
(3) Remove cleaner base from carburetor.
Be careful not to lose gasket (air cleaner).
M6 nut : 2 pcs.
10 mm box wrench
MUFFLER CP
M8 x 16 BOLT AND
WASHER AY : 2 pcs.
M6 x 14 FLANGE
BOLT : 2 pcs.
(with sealant)
M6 x 14 FLANGE
BOLT : 1 pc.
M8 FLANGE
NUT : 2 pcs.
CYLINDER BAFFLE
STEP 5
GASKET
(MUFFLER)
CLEANER COVER
BREATHER PIPE
M6 SELF LOCK NUT : 2 pcs.
CLEANER BASE
ELEMENT
URETHANE FOAM
STEP 6

– 5 –
Step Parts to remove Remarks and procedures Fasteners
7
Governor lever (1) Loosen the bolt and remove governor lever.
(2) Unhook governor spring from governor lever.
Mark the hole on which the governor
spring is hooked.
M6 x 25 : 1 pc.
10 mm box spanner
8
Carburetor Remove carburetor carefully unhooking
governor rod and rod spring from governor
lever.
9
Speed control lever and
base plate
M6 pivot bolt : 1 pc.
M6 x 8 flange bolt : 2 pcs.
10 mm box spanner
M6 x 8 FLANGE
BOLT : 2 pcs.
M6 x 25 BOLT AND
WASHER AY : 1 pc.
GOVERNOR ROD
SPEED CONTROL LEVER AY
GOVERNOR SPRING
ROD SPRING
LINKAGE
BUSHING
STEP 9
STEP 8
STEP 7
SPACER
RETURN
SPRING
FRICTION WASHER
M6 PIVOT BOLT
: 1 pc.
GASKET (INSULATOR)
GASKET (INTAKE)
INSULATOR
CARBURETOR
BASE PLATE CP
GOVERNOR LEVER

– 6 –
Step Parts to remove Remarks and procedures Fasteners
10 Ignition coil Remove ignition coil from crankcase. M6 x 25 : 2 pcs.
10 mm box spanner
11
Flywheel (1) Remove the starter pulley from flywheel.
Place socket wrench on flywheel fastening
nut and strike tip of the lever with hammer.
(2) Remove the cooling blower.
(3) Tap on flywheel end of crankshaft using
aluminum bar to remove flywheel.
(4) Remove the key from crankshaft.
M14 nut, springwasher :
1 pc.
M6 x 12 : 4 pcs.
19 mm socket wrench
10 mm box wrench
12 Spark plug Remove spark plug from cylinder head. 19 mm plug wrench
SPARK PLUG
SPARK PLUG CAP
FLYWHEEL CP
COOLING BLOWER
WOODRUFF KEY
STARTING
PULLEY
M6 x 12 FLANGE
BOLT : 4 pcs.
M14 SPRING WASHER : 1 pc.
M14 NUT : 1 pc.
M6 x 25 BOLT AND
WASHER AY
: 2 pcs.
IGNITION COIL CP
STEP 10
STEP 12
STEP 11
ALUMINUM BAR
FLYWHEEL

– 7 –
Step Parts to remove Remarks and procedures Fasteners
13
Rocker cover Remove rocker cover, gasket, breather plate
and oil shelter plate from cylinder head.
M6 x 75 : 4 pcs.
10 mm box spanner
14
Cylinder head (1) Remove cylinder head and gasket from
crankcase.
(2) Remove push rods from cylinder.
M8 x 55 : 2 pcs.
M8 x 55 x 12.5 : 2 pcs.
10, 12 mm box spanner
or box wrench
PUSH ROD
PIPE KNOCK
GASKET
CYLINDER
HEAD CP
STEP 14
ROCKER COVER
GASKET
GASKET
BREATHER PLATE
OIL SHELTER PLATE
M8 x 55 FLANGE
BOLT : 2 pcs.
M8 x 55 x 12.5
BOLT : 2 pcs.
STEP 13
M6 x 75 FLANGE
BOLT : 4 pcs.

– 8 –
Step Parts to remove Remarks and procedures Fasteners
15
Main bearing cover Be careful not to damage the oil seal.
Use a soft hammer and evenly tap around
outer surface of cover.
M6 x 30 : 9 pcs.
10 mm box spanner
soft hammer
MAIN BEARING
COVER CP
M6 x 30 BOLT AND
WASHER AY : 9 pcs.
STEP 15

– 9 –
Step Parts to remove Remarks and procedures Fasteners
16
Camshaft and tappets Lay carnkcase on the flywheel side push
tappets up into the block and remove
camshaft.
Be careful not to damage camshaft
and tappets.
CAMSHAFT
TAPPET
STEP 16
CAMSHAFT

– 10 –
Step Parts to remove Remarks and procedures Fasteners
17
Connecting rod and
piston
(1) Remove connecting rod bolts and
connecting rod cap.
(2) Turn crankshaft until piston comes to top
dead center, push out connecting rod and
piston assembly through top of cylinder.
* Scrape off all carbon deposits that might
interfere with removal of piston from
upper end of cylinder.
M5 x 25 : 2 pcs.
8 mm box spanner
Piston and piston pin (1) Remove clips and piston pin to remove
connecting rod from piston.
(2) Remove piston rings from piston.
* Be careful not to damage the piston
and connecting rod.
Be careful not to break rings by spreading
too much or twisting.
CONNECTING ROD
M5 x 25
CONNECTING
ROD BOLT
: 2 pcs.
PISTON RING
PISTON
PISTON PIN
CLIP
CLIP
STEP 17

– 11 –
Step Parts to remove Remarks and procedures Fasteners
18
Crankshaft Tap lightly on flywheel end of crankshaft with
a soft hammer to remove from crankcase.
* Be careful not to damage oil seal.
soft hammer
CRANKSHAFT
STEP 18

– 12 –
Step Parts to remove Remarks and procedures Fasteners
19
Intake and exhaust
valves
(1) Press down the spring retainer, take
out collet valve, and then remove
spring retainer and valve spring.
(2) Remove intake and exhaust valves
from cylinder head.
* Clean carbon and gum deposit from the
valves, valve seats, ports and guides.
Inspect valves, valve seats and guides.
10 mm spanner
hexagonal wrench
BOLT (PIVOT) : 2 pcs.
COLLET VALVE
SPRING
RETAINER
VALVE
SPRING
ROCKER ARM
M6 NUT
: 2 pcs.
GUIDE PLATE
EXHAUST VALVE INTAKE VALVE
STEP 19

– 13 –
2-2 REASSEMBLY PROCEDURES
●PRECAUTIONS FOR REASSEMBLY
1) Clean parts thoroughly before reassembly.
Pay close attention to the cleanliness of piston, cylinder, crankshaft, connecting rod and bearings.
2) Scrape off all carbon deposits from cylinder head, piston top and piston ring grooves.
3) Check lip of oil seals. Replace oil seal if the lip is damaged. Apply oil to the lip before reassembly.
4) Replace all the gaskets with new ones.
5) Replace keys, pins, bolts, nuts, etc., if necessary.
6) Torque bolts and nuts to specification refer to the “TORQUE SPECIFICATIONS” (See page 38).
7) Apply oil to rotating and sliding portions.
8) Check and adjust clearances and end plays where specified in this manual.
9) When mounting any major parts during reassembly of the engine, rotate it with your hand to check for
any jamming or abnormal noise.
2-2-1 MAIN BEARING COVER
Install drain plug and gasket to main bearing cover.
2-2-2 CRANKSHAFT
(1) Install crankshaft in crankcase wrapping the
keyway with polyvinyl tape to avoid damage to oil
seal.
(2) Install woodruff key for flywheel on crankshaft.
Tightening torque
20 - 23 N•m
(200 - 230 kgf•cm)
(14.4 - 16.6 ft•lb.)
DRAIN PLUG
GASKET
MAIN BEARING COVER
CRANKSHAFT
POLYVINYL TAPE

– 14 –
2-2-3 PISTON AND PISTON RINGS
Install oil ring first, then second ring and top ring.
Spread ring only far enough to slip over piston
and into correct groove. Use care not to distort
ring.
Install top and second ring with punched mark
beside the gap face upward.
OPEN ENDS OF PISTON RING
3
2
1
3
2
1
MARK "R" MARK "RN"
TAPER
TOP RING
SECOND RING
TOP RING SECOND RING
OIL RING
BARREL
CUTTER RING

– 15 –
2-2-4 PISTON AND CONNECTING ROD
(1) The direction of piston on connecting rod is not
specified.
(2) Apply oil to the small end of connecting rod,
piston and piston pin before assembling.
Be sure to use clips on the both side of the
piston pin to secure piston pin in position.
(3) Install piston and connecting rod assembly into
cylinder.
Use a piston ring compressor to hold piston rings.
The “MA” mark of the connecting rod is to face
the flywheel side of the engine when assembled.
PISTONRING
COMPRESSOR
CONNECTING ROD
"MA" SIDE
"MA" MARK
Note:
(1) Apply enough oil to lubricate the piston
rings, connecting rod bearings and
cylinder bore before assembly.
(2) Set gaps of the piston rings 120 degrees
apart from each other before assembly.
TOP RING SECOND RING
OIL RING

– 16 –
2-2-5 CONNECTING ROD
(1) Turn crankshaft to bottom dead center, lightly tap
top of the piston until large end of the rod meet
crank pin.
(2) Install connecting rod cap to connecting rod.
Attach connecting rod cap to connecting rod so
that the "MA" marking is faced upwards and the
splasher is located on the left-hand side.
Tighten connecting rod bolts to the specification.
M5 x 25 mm connecting rod bolt : 2 pcs.
(3) Check for free movement of connecting rod by
turning crankshaft slowly.
2-2-6 TAPPETS AND CAMSHAFT
(1) Oil the tappets and install them.
Push in fully to avoid damage during
camshaft installation.
(2) Lubricate bearing surfaces of camshaft.
(3) Align the timing mark on crankshaft gear with the
timing mark on camshaft and install camshaft in
the crankcase.
CAUTION:
Incorrect valve timing will cause malfunction
of the engine.
Tightening torque
6 - 8 N•m
(60 - 80 kgf•cm)
(4.3 - 5.7 ft•lb.)
MA
"MA" MARK
SPLASHER
LEFT SIDE
TIMING MARK
CRANKSHAFT
GEAR
CAMSHAFT

– 17 –
2-2-7 MAIN BEARING COVER
(1) ADJUST CRANKSHAFT END PLAY
Adjust end play to 0.2 mm (0.008") using the
proper spacer.
The proper spacer may be determined in the
following manner.
1) Measure the height “A” (From the mating
surface to the inner race of the ball bearing.)
2) Measure the depth “B” (From the mating
surface to the crank gear.)
B – A=SIDE CLEARANCE (mm)
(SIDE CLEARANCE) – 0.2 mm = THICKNESS OF
CRANKSHAFT SHIM (mm)
B – A=SIDE CLEARANCE (in.)
(SIDE CLEARANCE) – 0.008 in. = THICKNESS
OF CRANKSHAFT SHIM (in.)
Following are available spacer shims.
CRANKSHAFT
SPACER SHIMS
T =0.8 mm (0.031 in.)
T =1.0 mm (0.039 in.)
T =1.2 mm (0.047 in.)
CRANKSHAFT
GEAR
DEPTH GAUGE
CRANKCASE
B
CRANKSHAFT
CRANKCASE
CRANKSHAFT GEAR
MAIN BEARING COVER
BALL BEARING
B
A

– 18 –
MAIN BEARING
COVER CP
M6 x 30 BOLT AND
WASHER AY : 9 pcs.
SPACER
CRANKSHAFT
CAMSHAFT
SEALANT
(Three bond 1280B or 1216)
CRANKCASE
(2) MAIN BEARING COVER
Lubricate the oil seal and bearing surfaces.
*Coat the suface of the main bearing cover with sealant (Three bond 1280B or 1216).
Place spacer chosen in STEP (1) on crankshaft.
Use an oil seal guide when installing the main bearing cover to avoid damaging the oil seal.
Tap the cover into place with a soft hammer.
M6 x 30 mm bolt and washer : 9 pcs.
Tightening torque
10 - 12 N•m
(100 - 120 kgf•cm)
(7.2 - 8.7 ft•lb.)