PRO46 SERIES WALK-BEHIND TROWEL • OPERATION AND PARTS MANUAL — REV. #1 (8/20/15) — PAGE 41
ENGINE OIL
1. Drain the engine oil when the oil is warm as shown in
Figure 55.
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 55. 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 56) 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 56. Spark Plug Gap
V-BELT
Visually examine the V-belt (Figure 57) and determine if it
is full of tiny cracks, frayed, has pieces of rubber missing,
is peeling or otherwise damaged.
Also, examine the belt and determine if it is
oil soaked
or
"
glazed
" (hard shiny appearance on the sides of the belt).
Either of these two conditions can cause the belt to run hot,
which can weaken it and increase the danger of it breaking.
NOTICE
NEVER
use a spark plug of incorrect heat range.
GAP
.028 - .031 IN.
(0.7- 0.8 MM.)
