MTD hs720r Manuale dell'Operatore Scaricare il pdf (Pagina 14)

MAINTENANCE SCHEDULE

Perform these required maintenance procedures at the

frequency stated in the table. These procedures should

also be a part of any seasonal tune-up.

NOTE: Some maintenance procedures may require

special tools or skills, tfyou are unsure about

these procedures take your unit to any non-road

engine repair establishment, individual or

authorized service dealer.

NOTE: Maintenance, replacement, or repair of the

emission control devices and system may be

performed by any non-road engine repair

establishment, individual or authorized service

dealer.

,_ WARNING: To prevent serious inJury, never I

perform maintenance or repairs with the unit

running. Always service and repair a cool unit. I

Disconnect the spark plug wire to ensure that

the unit cannot start.

FREQUENCY MAINTENANCE REQUIRED REFER TO

Before starting engine Fill fuel tank with fresh fuel Page 10

Check oil Page 17

Every 10 hours Clean and re-oil air filter Page 18

First change at 10 hours Change oil Page 17

Every 25 hours thereafter Change oil Page 17

Every 25 hours Clean spark arrestor Page 21

10 hours on new engine Check rocker arm to valve clearance and adjust Page 19

Every 25 hours Check rocker arm to valve clearance and adjust Page 19

Every 25 hours Check spark plug condition and gap Page 21

LINE INSTALLATION FOR THE SPEEDSPOOL ®

WARNING: Never use metal-reinforced line,

wire, chain, or rope, etc. These can break off

and become dangerous projectiles.

Always use Genuine Factory Parts TM 0.080 inch

(2.03 mm) replacement line. Lines other than those

specified may make the engine overheat or fail.

There are two methods to replace the SpeedSpool _

trimming line:

• Wind the inner reel with new line

• Install a pre-wound inner reel

Winding the Inner Reel With New Line

NOTE: It Is unnecessary to remove the bump knob to

install a new trimming line,

1. Cut two pieces of 0.080 inch (2.03 mm) trimming

line, 10 feet (3 m) long.

2. Hold the outer spool and turn the inner ree!

counterclockwise to line up the arrows on the outer

spool and inner reel (Fig. 20).

,_ WARNING: Always use the correct line I

length when installing trimming line on the I

lineunit,isThetoo linelong,may not release properly if the

Top View Of The SpeedSpooP

Arrows

Outer Spool

Inner Reel

Fig. 20

Bump Knob

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 28 29

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MTD hs720r Manuale dell'Operatore Pagina 14

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