Selector Drum; Carburettor Overhauling (Tc-Txc-Smr 450 R) - Husqvarna TE 250 Workshop Manual

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ENGINE OVERHAULING

Selector drum

Check grooves "A" for wear or dents: if grooves are worn or dented, replace drum
selector. Check drum selector for bent or damage: if bent, worn or damaged, replace
it.

Carburettor overhauling (TC-TXC-SMR 450 R)

Thoroughly wash with petrol and dry with compressed air all carburetor componets. Thoroughly clean all jets and ducts with com-
pressed air only.
Never use tips of metal wires. Check that the gate valve is in good condition and runs freely in its housing but without excessive
clearance.
Check that the pin and spray nozzle are in good conditions. Check that the pin valve has a good seal.
CARBURETTOR SETTING "KEIHIN" (TC-TXC-SMR 450 R)
1-Main jet: 175 (250); 180 (450-510);
2-Idle jet: 42 (250); 45 (450-510);
3-Starting jet: 72 (250); 85 (450-510)
4-Main air jet: 200
5-Throttle valve: 15/M
6-Tapered needle/needle position: OBDVR/4 (250); OBDVR/5 (450-510);
7-Air screw, open by turns: 1+1/2 (250); 2 (450-510);
8-Low air jet: 100
9-Spray nozzle: P4
10-Float: g. 11,2
- Starting air jet: 4 mm / 0.16 in.
- Venturi Diameter: 37 mm (250); 41 mm (450-510);
Part. N. 8000 B0148 (02-2008)
G.21

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