Multiquip BS46H90 Manuale Utente

1.  Drain the engine oil when the oil is warm as shown in 

Figure 43.

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.

1.  Remove and clean spark plug (Figure 44) 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.

Operating the engine with loose or damaged air cleaner 

components could allow unfiltered air into the engine 

causing premature wear and failure.

NeveR use a spark plug of incorrect heat range.

Visually examine the V-belt (Figure 45) 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. 

GAP

.028 - .031 IN.

(0.7- 0.8 MM.)

GLAZED

OIL SOAKED

BROKEN

CORD FAILURE

CRACKS

MISSING RUBBER

SIDEWALL

WEAR

WORN BACK

COVER