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US-10

HEZ2450S/HEZ3050S

7. Fuel

FUEL 

• Gasoline is very flammable. Avoid smoking or bringing any

flame or sparks near fuel. Make sure to stop the engine and
allow it cool before refueling the unit. Select outdoor bare
ground for fueling and move at least 10 ft (3 m) away from
the fueling point before starting the engine.

GASOLINE REQUIREMENTS

• All 2-Stroke RedMax Products are powered by RedMax

Professional-Commercial Duty, Hi-Performance, Hi-RPM, 

Air

Cooled

2-Stroke engines.

RedMax – Hi-Performance 2-stroke engines produce higher HP
outputs as compared to standard Home Owner Duty or Light
Commercial Duty production engines offered by most
manufacturers.

• Exhaust emission are controlled by the fundamental engine

parameters and components (eq., carburation, ignition timing
and port timing) without addition of any major hardware or the
introduction of an inert material during combustion.

• The RedMax Engines are registered and certified with CARB

(California Air Resources Board) and EPA (Environmental
Protection Agency) to operate on CLEAN Mid-grade 89 octane
or Premium, unleaded (lead-free) gasoline and RedMax Air-
Cooled  "Max Life", Synthetic blend Premium two-stroke engine
oil mixed at 50:1 ratio.

• Unleaded gasoline is recommended to reduce the

contamination of the air for the sake of your health and the
environment.

• This Hi-Performance Air Cooled 2-stroke Engine requires the 

use of 

Minimum

89 Octane              (Mid grade or Premium) 

clean gasoline. Gasoline may contain maximum of 10% Ethanol
(grain alcohol) or up to 15% MTBE (Methyl tertiary-butyl ether).
Gasoline containing Methanol (Wood Alcohol) is 

NOT

approved.

• IF octane rating of the Mid Grade gasoline in your area is lower

than 89 Octane use Premium Unleaded Gasoline. The majority
of all 2-stroke engine manufacturers in the USA and Canada
recommend using gasoline with 89 Octane or higher.

• Gasoline with an octane rating lower than 89 will greatly

increase the engines operating temperature. Low octane
gasoline will cause detonation (knock) resulting in piston
seizures and major internal engine components damage.

• Poor quality gasolines or oils may damage sealing rings, fuel

WARNING

NOTE

WARNING

lines or fuel tank of the engine.

• Failures caused by operating engines on gasoline with octane

rating lower than 89 are not covered by the RedMax Two-
Stroke engine warranty.

• Alternative Fuels (Not Gasoline)

Alternative fuels, such as E-15 (15% ethanol), E-20 (20%
ethanol), E-85 (85% ethanol) are NOT classified as gasoline
and are NOT approved for use in RedMax 2-stroke gasoline
engines. Use of alternative fuels will cause major engine
performance and durability problems such as: improper
clutch engagements, overheating, vapor lock, power loss,
lubrication deficiency, deterioration of fuel lines, gaskets
and internal carburetor components, etc... Alternative fuels
cause high moisture absorption into the fuel/oil mixture
leading to oil and fuel separation.

OIL REQUIREMENTS

• Use only RedMax  "Max Life", Synthetic blend Premium Air-

Cooled two-stroke engine oil or oil certified to ISO-L-

EGD

(ISO/CD1378) standard AND one that is JASO-

FD

registered.

RedMax Air-Cooled  "Max Life", Synthetic blend Premium two
stroke engine oil and ISO-L-

EGD

(ISO/CD1378) AND JASO-

FD

oils are fully compatible with gasoline's containing 10% Ethanol.
RedMax Air-Cooled  "Max Life", Synthetic blend Premium two
stroke engine oil and ISO-L-

EGD

(ISO/CD1378) AND JASO-

FD

oils are 

Universal

and should be mixed at 50:1 ratio for all 2

stroke air cooled engines sold in the past regardless of mixing
ratios specified in those manuals.

• If the oil is registered with JASO, the JASO Logo with 

FD

and

registration number will be displayed on the container. The
highest JASO rating is  "FD", which equals the ISO-L-

EGD

rating. Lower ratings are  "FC",  "FB", and  "FA".

• Engine problems due to inadequate lubrication caused by

failure to use ISO-L-

EGD

certified and JASO 

FD

registered oil

such as  "MaxLife", RedMax Synthetic blend Premium 2-stroke
oil 

WILL VOID THE REDMAX TWO-STROKE ENGINE

WARRANTY.

• Do not use NMMA (National Marine Manufacturers

Association), BIA (Boating Industry Association), and TCW (two
cycle water cooled) oils designed for MoPeds or Outboard,
water cooled Marine Engines. Do not use API (American
Petroleum Institute), TC (Two Cycle) labeled oils. The API-TC

WARNING

WARNING

NOTE

[ R+M ]

2

Summary of Contents for STICK HEZ2450S

Page 1: ...RS DRIVE UNIT 90800101 and up ENGINE UNIT 90800101 and up WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reprod...

Page 2: ...4 4 Symbols on the machine 4 5 For safe operation 5 6 Set up 9 7 Fuel 10 8 Operation 12 9 Maintenance 14 10 Storage 17 11 Disposal 17 12 Troubleshooting guide 17 Contents 1 Read this stick edger Owne...

Page 3: ...deg Reduction ratio 2 538 33 13 Cutting head rotating direction Clockwise Vew against blade Durability period 300 hrs Blade length 7 87 200 in mm Use for Lawn edging Standard Accessories Goggle 1 pc...

Page 4: ...CATIONS AND ADJUSTMENTS EMISSION CONTROL INFORMATION USE JASO FD OR ISO L EGD GRADE 50 1 OIL MANUFACTURED THIS ENGINE MEETS U S EPA AND CALI FORNIA EXH EVP REGS FOR 2009 1 S O R E ENGINE FAMILY 9HQZS...

Page 5: ...safe operation b Approved ear protection to reduce the risk of hearing loss c Approved ANSI Z87 1 eye protection and foot protection to reduce the risk of injury associated with thrown objects d Face...

Page 6: ...as to ensure that neither the cutting part nor the throttle come into contact with any obstacle when the engine IMPORTANT WARNING 5 For safe operation starts Make sure the throttle is at idle positio...

Page 7: ...bed Comply with times listed in local ordinances 2 To reduce sound levels limit the number of pieces of equipment used at any one time IMPORTANT 3 Operate the product at the lowest possible throttle s...

Page 8: ...t a representative from the store nearest RedMax authorized servicing dealer for assistance 6 Do not use any accessory or attachment other than those bearing the RedMax mark and recommended for the un...

Page 9: ...tch drum then attach the gearbox to the shaft tube as aligning the positioning holes and fasten the screw A Fasten the clamp bolt B firmly SE1 A Screw B Clamp bolt B Tightning Torque 70 130 in lb 8 15...

Page 10: ...al engine components damage Poor quality gasolines or oils may damage sealing rings fuel WARNING NOTE WARNING lines or fuel tank of the engine Failures caused by operating engines on gasoline with oct...

Page 11: ...THE UNIT 1 Untwist and remove the fuel cap Rest the cap on a clean surface 2 Put fuel into the fuel tank to 80 of the full capacity 3 Fasten the fuel cap securely and wipe up any fuel spillage around...

Page 12: ...n a flat firm place Keep the cutting head off the ground and clear of surrounding objects as it will start rotating upon starting of the engine 2 Push the primer pump several times until overflown fue...

Page 13: ...ver lean over the rotating cutting head Rocks or other debris could be thrown into eyes and face and cause serious personal injury 2 Keep the blade guard and the mad guard attached in place at all tim...

Page 14: ...readjust GAP 025in 0 6 0 7mm spark plug plug gap replace if necessary cylinder fins intake air cooling vent clean muffler spark arrester cylinder exhaust port clean throttle lever ignition switch che...

Page 15: ...ter turn more with a socket wrench TIGHTENING TORQUE 87 104 in lbs 9 8 11 8 N m IMPORTANT WARNING 025 in 0 655mm MA3 1 MA4 9 Maintenance 1 MA1 1 MA2 MUFFLER Inspect periodically the muffler for loose...

Page 16: ...of wood chips leaves and other waste before use Check the intake air cooling vent and the area around the cylinder cooling fins after every 25 hours of use for blockage and remove any waste which has...

Page 17: ...th correct fuel carburetor adjustment screw out of normal range adjust to normal range muffler cylinder exhaust port carbon is built up wipe away air cleaner clogged with dust replace cylinder fin fan...

Page 18: ...ribution center or service center as soon as the problem exists The warranty repairs should be completed in a reasonable amount of time not to exceed 30 days If you have any questions regarding your w...

Page 19: ...tenance schedule WHAT IS NOT COVERED All failures caused by abuse neglect or improper maintenance are not covered ADD ON OR MODIFIED PARTS Add on or modified parts that are not exempted by CARB or EPA...

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