Northern Lights NL844LW2 / NL844W2 — Adjusting Valve Clearances
Adjustments · Cylinder head valves
For the Northern Lights NL844LW2 / NL844W2, from the Northern Lights operator's manual.
Applies to: Northern Lights NL844LW2, Northern Lights NL844W2, Northern Lights 844 / 844L engine, Northern Lights 844L engine
Procedure
- Adjust valve clearance after first 50 hours and every 1000 hours thereafter.
- Do adjustments after cylinder head bolts have been re-tightened. Engine must be cold and NOT running.
- Turn engine by hand until the inlet valve starts to open and exhaust valve starts to close (valves rocking).
- Turn the crankshaft one more full turn and adjust clearance on both valves for this cylinder. Align top mark of crank pulley with TOP mark of timing gear case.
- Loosen the lock nut and adjust clearance between rocker arm and valve guide with the adjustment screw.
- Repeat for each cylinder individually.
- Replace rocker arm cover and tighten cover nuts to 5 - 8 ft/lbs (0.8 - 2.3 kg/m).
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- clearance 0.008 in. (0.2 mm) on both intake and exhaust valves
- rocker arm cover nuts 5 - 8 ft/lbs (0.8 - 2.3 kg/m)
Full service-parts list: Northern Lights NL844LW2 →, Northern Lights NL844W2 →
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.