New Force Motor NF150 Betriebsanleitung
NF150- 150cc Utility Repair Manual
CONTENTS
1.INFORMTION 2
2.MAINTENANCE 6
3. ENGINE REMOVAL AND INSTALLATION 12
4.ENGINEFUELSYSTEM 13
5. ENGINE LUBRICATION AND COOLING SYSTEM 15
6. ENGINE COMBUSTION SYSTEM 16
7.TRANSMISSIONSYSTEM 25
8. FRONT WHEEL AND STEERING SYSTEM 30
9.REARWHEELSYSTEM 38
10. BODY COVER AND EXHAUST PIPE 41
11. ELECTRICAL SYSTEM 43
12. TROUBLE SHOOTING 47
2
1. INFORMATION
1.1SAFETY
＊Gasoline is extremely flammable and is explosive under certain condition.
Do not smoke or allow spark or flames in your work area.
＊Never run the engine in a closed area. The exhaust contains poisonous carbon
monoxide gas that may cause loss of consciousness and lead to death.
＊The battery electrolyte contains sulfuric acid. Protect your eyes, skin and clothing.
If you contact it , flush thoroughly with water and call a doctor if electrolyte gets
In your eyes.
1.2NOTES
All information, illustrations, directions and specifications included in this publication
are base on the latest product information available at the time of approval for printing.
NEW FORCE MOTOR CO., LTD. reserves the right to make changes at any time without
notice and without incurring any obligation whatever.
No part of this publication may be reproduced without written permission.
3
1.3 SPECIFICATION
ENGINE
Type Air-Cooling4-Stroke
Displacement 149.5cc
BoreandStroke 57 x 57.8mm
Compression 9.2:1
Maximum Torque 1.2kgm@6000rpm
Carburetor Kei-hin009Qga
Ignition CapacitorDischarge
Starting Electric&KickStarter
Lubrication Oil Pump Supply
Transmission Automatic(C.V.TV-belt)andReverse
CHASSIS
Overall Length 1720mm
OverallWidth 920mm
Overall Height 1030mm
SeatHeight 790mm
Wheelbase 1130mm
Ground Clearance 220mm
Dry Weight 182kg
FuelTankCapacity 11liter
SUSPENSION
Front Double A arm
Rear Swingarm
BRAKES
Front Drum x 2 (EEC SPEC. ADDITION)
Rear Diskx1(FOOTBRAKESYSTEM)
TIRIES
Front USA {22”×7”－10” EEC{21”×7”－10”
Rear SPEC. {22”×10”－10” EEC{21”×10”－8”
ARTILLERY GREEN/VIPER RED/LIGHT YELLOW
COLORING
Specifications subject to change without notice.
4
1.4 SERIAL NUMBER
The frame serial number is stamped on the front of the frame.
The engine serial number is stamped on the left side of the crankcase.
5
1.5 TORQUE VALUES
ENGINE
＊Cy1inder head hut…………………………………………………………………2.0kgm
＊Spark plug…………………………………………………………………………1.2kgm
＊Stud bolt……………………………………………………………………………0.9kgm
＊Alternator wheel nut…………………………………………………………… …5.5kgm
FRAME
＊Handlebar upper holder bolt………………………………………………………2.7kmg
＊Steering stem nut…………………………………………………………………..11.0kgm
＊Steering stem shaft holder bolt…………………………………………………….2.0kgm
＊Front and rear cushion bolt………………………………………………………...4.0kgm
＊Steering stem rod nut………………………………………………………………4.0kgm
＊Aarm bolt………………………………………………………………………….4.0kgm
＊A arm holder bolt…………………………………………………………………..6.0kgm
＊Front wheel nut………………………………………………………………….....4.5kgm
＊Disk holder bolt……………………………………………………………………5.5kgm
＊Driven sprocket holder bolt………………………………………………………..4.0kgm
＊Drive chain sprocket nut…………………………………………………………..11.0kgm
＊Rear axle and tire castle nut……………………………………………………….11.0kgm
＊Rear wheel bolt…………………………………………………………………….4.5kgm
＊Exhaust muffler mounting bolt…………………………………………………….1.2kgm
＊Engine fr hanger bolt………………………………………………………………5.0kgm
＊Engine rr hanger bolt………………………………………………………………5.0kgm
＊R/L knuckle and tire castle nut…………………………………………………….11.0kgm
＊Swing arm axle nut……………………………………………………………… ..11.0kgm
＊RR axle holder bolt………………………………………………………………...6.0kgm
＊RR axle holder nut…………………………………………………………………25.0kgm
＊RR brake caliper fix bolt…………………………………………………………...3.2kgm
6
2. MAINTENANCE
2.1 MAINTENANCE DATA 2.8 IDLE SPEED
2.2 MAINTENANCE SCHEDULE 2.9 DRIVE CHAIN
2.3 FUELTUBE 2.10 BRAKE SYSTEM
2.4 THROTTLE OPERATION 2.11 WHEELS AND TIRES
2.5 THROTTLE CABLEADJUSTMENT 2.12 STEERING SYSTEM
2.6 AIR CLEANER 2.13 TOE-IN
2.7 SPARK PLUG 2.14 GEAR OIL
2.1 MAINTENANCE DATA
SPECIFICATION
SPARK PLUG:
SPARK PLUG GAP: 0.6-0.7 mm
RECOMMENDED SPARK PLUGS: NGK CR7 HSA
THROTTLELEVERFREEPLAY: 5-10mm
IDLE RPM 1550 ± 50 rpm
BRAKELEVERFREEPLAY: 15-25mm
DRIVECHAINSLACK 25-40mm
FRONT-REAR TIRE PRESSURE 3.2psi (22kpa)
TOE-IN 5±10mm
TORQUE VALUES
SPARK PLUG 1 .2kgrn
STEERING STEM ROD NUT 4.Okgm
ENGINEOIL JASOFCGradeorsamedegree
oil
GEAR LUBRICATION OIL SAE 30 900cc
MISSIONOIL SAE9O200cc
2.2 MAINTENANCE SCHEDULE
The maintenance intervals in the follow table is based upon average riding, conditions.
Riding in unusually dusty areas, require more frequent servicing
INITIAL SERVICE
(First week)
REGULAR SERVICE
(Every 30 operation days)
EVERY YEAR
FUEL LINE
HROTTLE OPERATION
AIR CLEANER
SPARK PLUG
CARBURETOR IDLE
RPM
DRIVE CHAIN
BRAKE SHOE WEAR
BRAKE SYSTEM
NUT, BOLT, FASTENER
WHEEL
STEERING SYSTEM
SUSPENSION SYSTEM
GEAROIL(30#)
MISSION OIL (90#)
I
I
I,L
I
I
I
I
C
I
I
I,L
I
I
I
R
I
I
I
I
R
Note-I：Inspect and Clean，Adjust，Lubricate or Replace，if necessary
C：Clean L：Lubricate R：Replace
2.3 FUELTUBE
Inspect the fuel lines for deterioration, damage or
7
leakage and replace if necessary.
2.4 THROTTLE OPERATION
inspect for smooth throttle lever full opening and
automatic full closing in all steering positions.
Inspect if there is no deterioration or damage in the
throttle cable, replace it if necessary.
Check the throttle lever, free play is 5-10 mm at the
tip of the throttle lever.
Disconnect the throttle cable at the upper end.
Lubricate the cable with commercially lubricant to
prevent premature wear.
2.5 THROTTLE CABLE ADJUSTMENT
Slide the rubber cap of the adjuster off the throttle.
Housing, loosen the lock nut and adjust the free play
of the throttle lever turning the adjuster on the
throttle housing.
Inspect the free play of the throttle lever.
2.6 AIR CLEANER
Unscrew the air cleaner cover screws.
Pull out the air filter element from the air cleaner case.
Wash the element in non-flammable solvent, squeeze
out the solvent thoroughly.
Let it dry.
Soak the filter element in gear oil and then squeeze
out the excess oil.
Install the element into air cleaner carefully.
8
2. 7 SPARK PLUG
This spark plug located at the front of the engine .
Disconnect the spark plug cap and unscrew the spark plug .
Check the spark plug electrodes for wearing .
Change a new spark plug if the electrodes and insulator tip
appear unusually fouled or burned .
Discard the spark plug if there is apparent wear or if the
insulator is cracked or chipped .
The spark plug gap shall keep in 0 . 6 一0 . 7mm .
With the sealing washer attached , thread the spark plug in
by hand to prevent crossing thread .
Tighten the spark plug with 1 . 2kgm
2. 8 IDLE RPM
Connect a engine speed meter .
Warm up the engine , 10 minutes are enough .
Turn the idle - speed adjust screw on the carburetor to
obtain the idle speed . " Turn in " ( clockwise ) will get
higher speed . " Turn out " ( counter clockwise ) will get
lower speed .
IDLE RPM 1550 士50rpm
2. 9 DRIVE CHAIN
When the drive chain becomes very dirty , it should be
removed , cleaned and lubricated by specify lubricator .
Using commercial chain lubricant to lubricate the drive
chain ,
Clean the drive chain with kerosene and wipe it dry .
Inspect the drive chain for possible wear or damage .
Replace the chain , if it is worn excessively or damaged
Inspect the sprocket teeth , if it is excessive wear or
damage , replace it .
9
Adjust the chain slack.
Loose the lock bolts (4pcs) then adjust the drive chain
slack by turn the adjusting nut.
Tighten the four lock bolts.
2.10 BRAKE SYSTEM
Inspect the front brake lever and cable for excessive play
or other damage.
Replace or repair if necessary.
Measure the free play of the brake lever at the end of the
brake lever. The standard of free play is 15-25mm.
Inspect the rear brake lever and cable for excessive play
or other damage.
Replace or repair if necessary.
Measure the free play of the rear brake lever at the end of
the lever. The standard is 15-25mm.
10
2.11 WHEELS AND TIRES
Inspect the tire surfaces for cuts, nails or other sharp
objects.
Check the tire surfaces at cold tire condition.
The standard of tire pressure is 3.2psi (22kpa).
2.12 STEERING SYSTEM
Check the free play of the handle steering
front wheels, turn straight ahead.
When there is excessive play, inspect the steering
stern rod.
2.13 TOE-IN
Let the vehicle on level ground and the front wheels
facing straight ahead.
Mark the centers of the tires to indicate the axle center
height.
Measure the distance between the marks.
(750±10mm)
Carefully move the vehicle back, let the wheels have
turned 1800 , so the marks on the tires are aligned
with the axle center height.
Measure the distance between the marks.
Calculate the difference in the front and rear
measurements.
Toe-in: 5±10mm
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