GPX 250r TSE, Maintenance Manual, Page: 67 / 104

GPX MOTO
www.GPXMOTO.com + www.GPXMOTOUK.com
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INTRODUCING ABOUT THE ENGINE STRUCTURE
1. COOLING SYSTEM
The GPX uses coolant to cool the engine. The coolant enters the engine from the water tank through
the radiators, takes away the heat of the engine, flows back to the water tank, and then exchanges
heat with the air. After the coolant cools down, it enters the engine again to play the cooling role
again.
INSTALLING THE ENGINE
The installation steps are as follows:
1. The engine is suspended on the frame (pay attention to protect the appearance of the engine).
2. Install the carburettor on the intake elbow and fasten it with nuts and bolts.
3. Install the throttle cable and air filter, the interface should be sealed, and the clutch control cable
should be installed.
4. Install the transmission chain.
5. Install the left rear cover or sprocket guard and fasten it with bolts. Pay attention to the outgoing
wire of the magneto.
6. Install exhaust muffler. The M8 nut and the exhaust pipe sealing ring should be installed firmly
with a tightening torque of 10
～
15N•m, and the exhaust port should not leak air during
installation.
ENGINE MAINTENANCE AND ADJUSTMENT
Inspection of installation bolts and nuts of cylinder head and cylinder block
The inspection is carried out at the first 1000km and every 5000km. When the engine is cold,
use a torque wrench to tighten the bolts and nuts to the specified torque.
TORQUE
M8
28
～
32N.m
M6
10
～
15N.m