Mantis Hedge Trimmer E System Owner's Manual download pdf (Page 10)

B. Engine Specifications

Dry Weight 2.5 kg –– 5 lbs., 10 ounces

Type of Engine Air Cooled, Two stroke, Single-

Cylinder, Gasoline Engine

Rotation Counterclockwise, viewed from TOP

Bore 32.2 mm (1.268 in.)

Stroke 26.0 mm (1.04 in. )

Spark Plug NGK BPM7Y, Champion RCJ-7Y or

RCJ-8Y The spark plug gap is

0.65 mm (0.026”).

Refer to Owner’s Manual, for

service Procedure

Fuel Premixed two stroke fuel

Fuel Oil Ratio 50:1 ratio with ECHO or

Mantis oil

Gasoline Unleaded, 89 octane or higher

Displacement 21.2 cc (1.294 cu. in.)

Exhaust System Spark arrester muffler

Carburetor ZAMA diaphragm model C1U type.

RPM at idle 2800

250 RPM

Ignition System There are no adjustments required

for the ignition

Service

Problem

1. Blades don’t cut

cleanly.

2. Blades don’t

move when

throttle is

depressed.

3. Engine fails to

start

4. Engine hard to

start.

5. Engine misses.

6. Engine lacks

power.

7. Engine

overheats.

8. Engine noisy or

knocking.

9. Engine stalls

under load.

Cause

Blades are dull or not adjusted properly.

Engine is not seated properly on the gear

housing.

Blades are adjusted too tight.

ON/OFF switch is in OFF position.

No fuel in tank.

Fuel strainer clogged.

Fuel line clogged.

Spark plug shorted or fouled.

Spark plug is broken (cracked porcelain or

electrodes broken).

Ignition lead wire shorted, broken or

disconnected from spark plug.

Ignition inoperative (no spark from lead

wire).

Water in gasoline or stale fuel mixture.

Too much oil in fuel mixture.

Engine under or over choked.

Carburetor out of adjustment.

Gasket leaks (carburetor or

cylinder base gasket).

Weak spark at sparkplug

Air cleaner clogged.

Carburetor out of adjustment.

Muffler clogged.

Clogged exhaust ports.

Clogged spark arrestor

Poor compression.

Insufficient oil in fuel mixture.

Air flow obstructed.

Loose flywheel.

Spark plugs incorrect heat range.

Worn bearings, piston ring or cylinder walls.

Carburetor adjustment too “lean”.

Engine overheats.

Remedy

Have blades sharpened and adjusted.

Re-install engine following the assembly instructions. (pg. 7)

Re-adjust blades following service instructions. (pg. 11)

Move switch to ON.

Fill Tank.

Replace Strainer.

Clean fuel line.

Install new sparkplug.

Replace sparkplug.

Replace lead wire or attach to sparkplug.

Contact Mantis.

Drain entire system and refill with fresh fuel.

Drain and refill with correct mixture. If flooded by over

choking, proceed according to instructions in operation

section. If under choked, move choke lever to closed position

and crank two or three times. See “Carburetor Adjustment”

Replace gaskets. (pg. 12)

Contact Mantis.

Remove and clean. See “Carburetor Adjustment”. (pg. 10)

Clean or replace spark plug - set gap to 0.6-0.7 mm (.024

.028in.).

Contact Mantis.

Clean air cleaner.

See “Carburetor Adjustment”.

Clean carbon from muffler.

Remove muffler, rotate engine until the piston is at top of

cylinder. With a wooden scraper or blunt tool, remove all

carbon from exhaust ports. Be careful not to scratch or

damage piston or cylinder walls. Blow out all loose carbon

with compressed air. Install muffler and gasket.

Clean

Contact Mantis.

Mix fuel as described in starting instructions.

Clean flywheel, cylinder fins and screen.

Tighten flywheel nut.

Replace with plugs specified for engine.

Contact Mantis.

See “Carburetor Adjustment”.

Remove dust and dirt from between cylinder fins.

A. Troubleshooting

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Mantis Hedge Trimmer E System Owner's Manual Page 10

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