honda-power-equipment hht31s ユーザーズマニュアル

(1) Service more frequently when used in dusty areas.

(2) These items should be serviced by your servicing dealer, unless you have the proper tools and are 

mechanically proficient. Refer to the Honda shop manual for service procedures.

(3) Log hours of operation to determine proper maintenance intervals.

Before 

each 

use

First 

month 

or

10 Hrs

Every

3 months 

or

25 Hrs

Every

6 months 

or

50 Hrs

Every 

year

or

100 Hrs

Every

2 years 

or

after 

each 

300 Hrs

Refer

to

page

Perform at every indicated 
month or operating hour 
interval, whichever comes first.

Engine oil

Check

O

Change

O

O

Air filter

Check

O

Clean

O(1)

Throttle cable

Check

O

Cutting attachment

Check

O

Debris shield

Check

O

Nuts, bolts, fasteners

Check

O

—

(Retighten if 
necessary)

Shoulder harness quick-release

Check

O

Drive cable

Check-Lubricate

O(2)

—

Idle speed     

Check-Adjust

O(2)

—

Valve clearance

HHT25S

Check-Adjust

O(2)

—

HHT31S

Check-Adjust

O(2)

Spark plug

Check-Clean

O

Replace

O

Spark arrester

Check

O

Combustion chamber

Clean

O(2)

—

Gear case

Lubricate

O(2)

—

Clutch shoes and drum

Check

O(2)

—

Fuel filter

Check

O

Fuel tank

Clean

O

Fuel tubes

Check

Every two years [replace if necessary (2)]

—

Oil tube (HHT25S only)

Check

Every two years [replace if necessary (2)]

—

Engine cooling fins

Check

O