Yamaha ttr230 User Manual

INSP
ADJUS
1
IGNITION PRESSURE CHECK/COMPRESSION PRESSURE
MEASUREMENT
3-14
1. Check:
 Valve clearance
Out of specification => Adjust.
See Section “VALVE CLEARANCE
ADJUSTMENT”.
4. Install:
 Cover
5. Disconnect:
 Strobe light
 Tachometer
NOTE:
Insufficient compression will result in
performance loss.
*************************************
COMPRESSION PRESSURE
MEASUREMENT
NOTE:
The ignition point cannot be adjusted.
Under severe conditions, oil may be sprayed
while the engine is running. Therefore, take
care when carrying out this check.
CAUTION:
 Using the strobe light check if the
stationary point 2 stays within the
ignition range 3 indicated in the magnet
wheel.
Incorrect => Check the pulse coil.
Checking steps:
 Remove the cover 1
 Start the engine.
*************************************
Engine rotation:
1,400 rpm

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