6
. DRIVE AND DRIVEN PULLEYS/
KICK STARTER
2
BR & M2 250 ENGINE
SERVICE INFORMATION
GENERAL INSTRUCTIONS
•
The drive pulley, clutch and driven pulley can be serviced with the engine installed.
•
Avoid getting grease and oil on the drive belt and pulley faces. Remove any oil or grease from them to
minimize the slipping of drive belt and drive pulley.
SPECIFICATIONS
Item
Standard (mm)
Service Limit (mm)
Movable drive face bushing I.D.
40.000
∼
40.025
40.06
Drive face collar O.D.
39.965
∼
39.955
39.85
Drive belt width
23.6
∼
24.4
25.5
Clutch lining thickness
3.963
∼
4.037
2.0
Clutch outer I.D.
153.0
∼
153.2
153.5
Driven face spring free length
131
130.5
Driven face O.D.
26.960
∼
26.974
26.90
Movable driven face I.D.
27.060
∼
27.090
27.13
Weight roller O.D.
18.9
∼
19.00
18.00
TORQUE VALUES
Drive face nut
49.0
∼
58.8N-m
Clutch outer nut
49.0
∼
58.8N-m
Clutch drive plate nut
49.0
∼
58.8N-m
SPECIAL TOOLS
Universal holder
Clutch spring compressor
Bearing driver
Lock nut wrench, 39mm
Kick starter spring remover
TROUBLESHOOTING
Engine starts but motorcycle won‘t move
Lack of power
•
Worn drive belt
•
Worn drive belt
•
Broken ramp plate
•
Weak driven face spring
•
Worn or damaged clutch lining
•
Worn weight roller
•
Broken driven face spring
•
Faulty driven face
Engine stalls or motorcycle creeps
•
Broken clutch weight spring
Summary of Contents for Bug Rider BR-250
Page 1: ...BR 250 BR 250SS M2 250 SERVICE MANUAL Manufactured by PGO of Motive Power Industry Co Ltd...
Page 34: ...4 CYLINDER HEAD VALVES 1 BR M2 250 ENGINE SCHEMATIC DRAWING...
Page 46: ...5 CYLINDER PISTON 1 BR M2 250 ENGINE SCHEMATIC DRAWING...
Page 55: ...6 DRIVE AND DRIVEN PULLEYS KICK STARTER 1 BR M2 250 ENGINE SCHEMATIC DRAWING...
Page 71: ...7 FINAL REDUCTION 1 BR M2 250 ENGINE SCHEMATIC DRAWING...
Page 82: ...8 CARBURETOR BR M2 250 ENGINE...
Page 90: ...9 A C GENERATOR STARTER CLUTCH 1 BR M2 250 ENGINE SCHEMATIC DRAWING...
Page 97: ...10 CRANKCASE CRANKSHAFT 1 BR M2 250 ENGINE SCHEMATIC DRAWING...
Page 103: ...10 CRANKCASE CRANKSHAFT 7 BR M2 250 ENGINE Torque 7 8 11 8N m Cam Chain Tensioner Slipper Bolt...
Page 105: ...11 COOLING SYSTEM 1 BR M2 250 ENGINE SCHEMATIC DRAWING...