Manual Honda Honda Engines GSV190 (page 9 of 32) (English, French, Spanish)

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TECHNICAL & CONSUMER INFORMATION

TECHNICAL

INFORMATION

Serial Number and

Type Location

Record the engine serial

number and type in the

space below. You will

need this information

when ordering parts and

when making technical or

warranty inquiries.

Engine serial number: __ __ __ __ __ – __ __ __ __ __ __ __

Engine type: __ __ __ __

Carburetor Modifications for High Altitude Operation

At high altitude, the standard carburetor air-fuel mixture will be too

rich. Performance will decrease, and fuel consumption will increase. A

very rich mixture will also foul the spark plug and cause hard starting.

Operation at an altitude that differs from that at which this engine was

certified, for extended periods of time, may increase emissions.

High altitude performance can be improved by specific modifications

to the carburetor. If you always operate your trimmer at altitudes

above 5,000 feet (1,500 meters), have your servicing dealer perform

this carburetor modification. This engine, when operated at high

altitude with the carburetor modifications for high altitude use, will

meet each emission standard throughout its useful life.

Even with carburetor modification, engine horsepower will decrease

about 3.5% for each 1,000-foot (300-meter) increase in altitude. The

effect of altitude on horsepower will be greater than this if no

carburetor modification is made.

NOTICE

When the carburetor has been modified for high altitude operation,

the air-fuel mixture will be too lean for low altitude use. Operation at

altitudes below 5,000 feet (1,500 meters) with a modified carburetor

may cause the engine to overheat and result in serious engine

damage. For use at low altitudes, have your servicing dealer return

the carburetor to original factory specifications.

Oxygenated Fuels

Some conventional gasolines are being blended with alcohol or an

ether compound. These gasolines are collectively referred to as

oxygenated fuels. To meet clean air standards, some areas of the

United States and Canada use oxygenated fuels to help reduce

emissions.

If you use oxygenated fuel, be sure it is unleaded and meets the

minimum octane rating requirements.

Before using an oxygenated fuel, try to confirm the fuel’s contents.

Some states/provinces require this information to be posted on the

pump.

The following are the EPA approved percentages of oxygenates:

If you notice any undesirable operating symptoms, try another service

station or switch to another brand of gasoline.

Fuel system damage or performance problems resulting from the use

of an oxygenated fuel containing more than the percentages of

oxygenates mentioned above are not covered under your engine

warranty (see last page).

Specifications – GSV160

Specifications – GSV190

Tuneup Specifications

ENGINE LACKS

POWER

Possible Cause Correction

1. Check air filter. Filter clogged. Clean or replace filter

(p. 6).

2. Check fuel. Bad fuel; engine stored

without treating or draining

gasoline, of refueled with bad

gasoline.

Drain the fuel tank and

carburetor (p. 8). Refuel

with fresh gasoline.

3. Take engine to an

authorized Honda

servicing dealer, or

refer to shop manual.

Fuel filter clogged, carburetor

malfunction, ignition

malfunction, valves stuck,

etc.

Replace or repair faulty

components as necessary.

SERIAL

NUMBER

AND TYPE

LOCATION

SERIAL NUMBER

TYPE

ETHANOL — (ethyl or grain alcohol) 10% by volume

You may use gasoline containing up to 10% ethanol

by volume. Gasoline containing ethanol may be

marketed under the name Gasohol.

MTBE — (methyl tertiary butyl ether) 15% by volume

You may use gasoline containing up to 15% MTBE

by volume.

METHANOL — (methyl or wood alcohol) 5% by volume

You may use gasoline containing up to 5%

methanol by volume as long as it also contains

cosolvents and corrosion inhibitors to protect the

fuel system. Gasoline containing more than 5%

methanol by volume may cause starting and/or

performance problems. It may also damage metal,

rubber, and plastic parts of your fuel system.

Length x Width x Height 14.4 x 13.0 x 14.2 in

(367 x 331 x 360 mm)

Dry weight 28.2 lb (12.8 kg)

Engine type 4-stroke, overhead cam, single cylinder

Displacement

[Bore x Stroke]

9.8 cu in (160 cm

)

[2.5 x 2.0 in (64 x 50 mm)]

Maximum output 4.4 bhp (3.3 kW, 4.5 PS) at 3,600 rpm

Maximum torque 6.9 ft-lb (9.4 N•m, 0.96 kg•m) at 2,500 rpm

Fuel tank capacity 0.91 

Fuel consumption 1,1 l /h at 3,000 rpm

Cooling system Forced air

Ignition system Transistorized magneto

PTO shaft rotation Counterclockwise

Length x Width x Height 14.4 x 13.0 x 14.5 in

(367 x 331 x 368 mm)

Dry weight 28.7 lb (13.0 kg)

Engine type 4-stroke, overhead cam, single cylinder

Displacement

[Bore x Stroke]

11.4 cu in (187 cm

)

[2.7 x 2.0 in (69 x 50 mm)]

Maximum output 5.1 bhp (3.8 kW, 5.2

PS) at 3,600 rpm

Maximum torque 8.3 ft-lb (11.3 N•m, 1.15 kg•m) at 2,500 rpm

Fuel tank capacity 0.91 

Fuel consumption 1,3 l

/h at 3,000 rpm

Cooling system Forced air

Ignition system Transistorized magneto

PTO shaft rotation Counterclockwise

ITEM SPECIFICATION MAINTENANCE

Spark plug gap 0.028 – 0.031 in (0.7 – 0.8 mm) Refer to page 6.

Valve clearance (cold) IN: 0.15 ± 0.04 mm

EX: 0.20 ± 0.04 mm

See your authorized

Honda dealer

Other specifications No other adjustments needed.

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