Yamaha ttr230 User Manual

INSP
ADJUS
Adjustment steps:
 Close the pilot screw 1 until it touches
its seat.
 Open the pilot screw up to the specified
value.
 Turn the idle speed screw 2 inward or
outward until establish the specified idle
speed.
CAMSHAFT CHAIN ADJUSTMENT
/ IDLE SPEED
3-9
************************************
CAMSHAFT CHAIN ADJUSTMENT
Automatic adjustment.
IDLE SPEED ADJUSTMENT
Let the engine run for some minutes for
warming up.
1. Connect:
 Tachometer 1 to spark plug cable
2. Check:
 Idle speed
Out of specification => Adjust.
3. Adjust:
• Idle speed
Pilot screw:
2.0 turns outward
Turning inward => Increases the idle speed.
Turning outward => Decreases the idle speed.
************************************
Tachometer:
90890-03113
Idle speed:
1,400~1,600rpm
1
2
1

Yamaha ttr230 Specifications

General

Engine Type	223cc air-cooled SOHC 4-stroke; 2 valves
Bore x Stroke	70.0mm x 58.0mm
Compression Ratio	9.5:1
Ignition	CDI
Transmission	Constant-mesh 6-speed; multiplate wet clutch
Final Drive	Chain
Rear Suspension	Single shock; 8.7-in travel
Front Tire	80/100-21
Rear Tire	100/100-18
Length	81.3 in
Width	31.5 in
Seat Height	34.3 in
Wheelbase	54.5 in
Ground Clearance	11.6 in
Front Suspension	Telescopic fork
Rear Brake	Drum