MULTIQUIP WRS5200 Operation Manual page 56

SPARK PLUG
NOTICE
NEVER use a spark plug of incorrect heat range.
1. Remove and clean spark plug (Figure 55) 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.
GAP
Figure 55. Spark Plug Gap
V-BELT
Visually examine the V-belt (Figure 56) 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.
If the V-belt exhibits any of the above wear conditions
replace the V-belt immediately.
PAGE 56 — WRS5200DFPU HYDRAULIC ROLLER SCREED • OPERATION MANUAL — REV. #2 (03/08/18)
.028 - .031 IN.
(0.7- 0.8 MM.)
GLAZED
CRACKS
SIDEWALL
WEAR
Figure 56. V-Belt Inspection
V-BELT TENSION
An improperly adjusted fan belt (Figure 57) can cause
engine over-heating and insufficient battery charging.
1. Measure the deflection by pressing the V-belt halfway
between the fan drive pulley and alternator pulley by
applying a force of 98 N (10 kgf, 22 lbf).
FAN
BELT
Figure 57. V-Belt Deflection
2. If the measurement is not within the specified limits of
0.28~0.35 in. (7~9 mm), loosen the alternator mounting
screws and readjust position of alternator until correct
belt deflection is achieved.
MAINTENANCE
OIL SOAKED
CORD FAILURE
WORN BACK
COVER
BROKEN
MISSING RUBBER
0.28~0.35 IN.
(7~9 MM)
DEFLECTION
FORCE
98 N
(10 kgf, 22 lbf)