PAGE 34 — BS90C WALK-BEHIND TROWEL • OPERATION AND PARTS MANUAL — REV. #0 (9/4/15)
ENGINE OIL
1. Drain the engine oil when the oil is warm as shown in
Figure 47.
2. Remove the oil drain bolt and sealing washer and allow
the oil to drain into a suitable container.
3. Replace engine oil with recommended type oil as listed
in Table 4. For engine oil capacity, see Table 3 (engine
specifications).
DO NOT
overfill.
4. Reinstall drain bolt with sealing washer and tighten
securely.
Figure 47. Draining Engine Oil
NOTICE
Operating the engine with loose or damaged air cleaner
components could allow unfiltered air into the engine
causing premature wear and failure.
MAINTENANCE
SPARK PLUG
1. Remove and clean spark plug (Figure 48) with a wire
brush if it is to be reused. Discard spark plug if the
insulator is cracked or chipped.
2. Using a feeler gauge adjust spark plug gap to 0.028
~0.031 inch (0.7~0.8 mm).
3. Thread spark plug into cylinder hole by hand to prevent
cross-threading, then tighten securely.
Figure 48. Spark Plug Gap
NOTICE
NEVER
use a spark plug of incorrect heat range.
GAP
.028 - .031 IN.
(0.7- 0.8 MM.)
Summary of Contents for BS90C
Page 70: ...PAGE 70 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 CRANKCASE ASSY ...
Page 72: ...PAGE 72 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 CRANKSHAFT ASSY ...
Page 74: ...PAGE 74 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 MUFFLER ASSY ...
Page 76: ...PAGE 76 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 AIR CLEANER ASSY ...
Page 78: ...PAGE 78 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 GOVERNOR ASSY ...
Page 80: ...PAGE 80 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 BLOWER ASSY ...
Page 84: ...PAGE 84 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 FUEL TANK ASSY ...
Page 86: ...PAGE 86 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 CARBURETOR ASSY ...
Page 90: ...PAGE 90 BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 EX27 OIL SENSOR ASSY ...
Page 93: ...BS90CWALK BEHINDTROWEL OPERATION AND PARTS MANUAL REV 0 9 4 15 PAGE 93 NOTES ...