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Northern Lights — SP-5 V-Belt Tension Check

Adjustments · Alternator drive V-belt

From a Northern Lights operator's manual covering: M30, M38C3, M38C3F, M40C3F, M944. Check it applies to your exact model before use.

Applies to: Northern Lights M30, Northern Lights M38C3, Northern Lights M38C3F, Northern Lights M40C3F, Northern Lights M944

Procedure

  1. Check tension and wear on the V-belt after every 50 hours.
  2. Press belt with thumb at midpoint between crankshaft and alternator pulleys.
  3. Tension is correct if belt can be depressed about .39 to .47 in. (10 - 12 mm) with 22 lbs. (10 kg) force.

Specs & values

  • Deflection .39 to .47 in. (10 - 12 mm) with 22 lbs. (10 kg) force

Full service-parts list: Northern Lights M30 →, Northern Lights M38C3 →, Northern Lights M38C3F →, Northern Lights M40C3F →, Northern Lights M944 →

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.

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