Multiquip SP2S20H - Manual (Page 37)

Sp2S20h paVeMeNT SaW • operaTioN MaNual — reV. #1 (02/17/12) — page 37
Maintenance
SparK plug aDjuSTMeNT
1. Make sure the engine is cool before servicing the
spark plugs.
2. Disconnect the spark plug caps. Check for dirt and
remove any dirt from around the spark plug area.
3. Remove the spark plugs with a 5/8-inch spark plug
wrench.
4. If the spark plugs are damaged, the sealing washer is
in poor condition, or if the electrode is worn, replace
the spark plugs.
5. Measure the spark plug electrode gaps with a wire-type
feeler gauge. If needed, adjust the gap to 0.7 - 0.8
mm (0.028 - 0.031 in), by carefully bending the side
electrode. See Figure 41.
Figure 41. Spark Plug Gap Adjustment
6. Install the spark plug carefully, by hand, to avoid cross
threading.
7. After the spark plug is seated, tighten with a 5/8-inch
spark plug wrench to compress the sealing washer.
8. When installing a new spark plug, tighten 1/2 turn, after
the spark plug seats, to compress the washer.
9. When reinstalling the original spark plug, tighten 1/8 1/4
turn after the spark plug seats to compress the washer.
10. Reattach the spark plug caps.
NOTICE
For good performance, the spark plugs must be
properly gapped and free of deposits.
While a loose spark plug can overheat or damage the
engine, overtightening the sparkplug can damage the
threads in the cylinder head.
GAP
.028 - .031 IN.
(0.7- 0.8 MM.)
SparK arreSTer CleaNiNg
Clean the spark arrester every 6 months or 100 hours.
1. Remove the special screw from the muffler and remove
the spark arrester (Figure 42).
Figure 42. Removing Spark Arrester
2. Carefully remove carbon deposits from the spark
arrester screen with a brush (Figure 43).
Figure 43. Cleaning The Spark Arrester
3. If the spark arrester is damaged and has breaks or
holes, replace with a new one.
4. Reinstall the spark arrester and muffler protector.