Northern Lights M175C2 — Valve Clearance Adjustment
Adjustments · Cylinder head valve train
For the Northern Lights M175C2, from the Northern Lights operator's manual.
Applies to: Northern Lights M175C2
Before you start
- Disconnect negative battery terminal before valve adjustment.
Procedure
- Disconnect negative battery terminal and wiring harness.
- Remove rocker arm cover with ventilator tube and injector wires.
- Rotate flywheel clockwise until timing pin engages flywheel hole.
- Confirm No. 1 cylinder rocker arms are loose at Top Dead Center.
- Check clearances on No. 1, 3, 5 exhaust and No. 1, 2, 4 intake valves.
- Adjust intake to 0.018 in (0.46 mm), exhaust to 0.028 in (0.71 mm).
- Tighten lock nut while holding adjusting screw.
- Tighten rocker cover capscrews in specified order.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Intake 0.018 in (0.46 mm)
- Exhaust 0.028 in (0.71 mm)
- Lock nut 27 N·m (20 lb-ft)
Full service-parts list: Northern Lights M175C2 →
Source: Northern Lights operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.