MTD 664G, 644E manual Trouble Shooting Guide, Trouble Possible Causes Corrective Action

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•Run engine until fuel tank is empty and engine stops due to lack of fuel.

•Drain carburetor by pressing upward on bowl drain, located below the carburetor cover.

NOTE: Fuel stabilizer, or “Sta-Bil” (Included with certain units), is an acceptable alternative in minimizing the formation of fuel gum deposits during storage. Do not drain carburetor if using fuel stabilizer.

•Wipe equipment with an oiled rag to prevent rust.

•Remove spark plug and pour one ounce of engine oil through spark plug hole into cylinder. Cover spark plug hole with rag. Crank engine several times to distribute oil. Replace spark plug.

•Follow the lubrication recommendations found in the Maintenance Section.

•Always store the snow thrower in a clean, dry area. When storing any type of power equipment in an unventilated or metal storage shed, care should be taken to rust proof the equipment. Using a light oil or silicone, coat the equipment, especially any chains, springs, bearings and cables.

SECTION 9: TROUBLE SHOOTING GUIDE

Trouble

Possible Cause(s)

Corrective Action

 

 

 

Engine fails to start

Fuel tank empty, or stale fuel.

Fill tank with clean, fresh gasoline. Fuel will not last over thirty days

 

 

unless a fuel stabilizer is used.

 

Blocked fuel line.

Clean fuel line.

 

Choke not in ON position

Move switch to ON position

 

Faulty spark plug.

Clean, adjust gap or replace.

 

Key not in switch on engine.

Insert key.

 

Spark plug wire disconnected.

Connect spark plug wire.

 

Primer button not depressed.

Refer to the engine manual.

 

Fuel shut-off valve closed

Open fuel shut-off valve.

 

(if so equipped).

 

Engine runs erratic

Unit running on CHOKE.

Move choke lever to OFF position.

 

Blocked fuel line or stale fuel.

Clean fuel line; fill tank with clean fresh gasoline. Fuel will not last

 

 

over thirty days unless a fuel stabilizer is used.

 

Water or dirt in fuel system.

Drain fuel tank. Refill with fresh fuel.

 

Carburetor out of adjustment.

Refer to the engine manual.

Loss of power

Spark plug wire loose.

Connect and tighten spark plug wire.

 

Gas cap vent hole plugged.

Remove ice and snow from cap. Be certain vent hole is clear.

 

Exhaust port plugged.

Clean following the engine manual.

Engine overheats

Carburetor not adjusted

Refer to the engine manual packed with your unit or have

 

properly.

carburetor adjusted by an authorized service dealer.

 

Incorrect fuel mixture.

Drain fuel tank. Refill with proper fuel mixture.

Excessive vibration

Loose parts or damaged auger.

Stop engine immediately and disconnect spark plug wire. Tighten

 

 

all bolts and nuts. Make all necessary repairs. If vibration

 

 

continues, have unit serviced by an authorized service dealer.

Unit fails to propel itself

Incorrect adjustment of drive

Adjust drive cable.

 

cable.

 

 

Drive belt loose or damaged.

Replace drive belt.

Unit fails to

Discharge chute clogged.

Stop engine immediately and disconnect spark plug wire. Clean

discharge snow

 

discharge chute and inside of auger housing.

 

Foreign object lodged in auger.

Stop engine immediately and disconnect spark plug wire. Remove

 

 

object from auger.

 

Incorrect adjustment of drive

Adjust drive cable.

 

cable.

 

 

Drive belt loose or damaged.

Replace drive belt.

NOTE: For repairs beyond the minor adjustments above, contact your local authorized service dealer.

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Contents Operator’s Manual Table of Contents Training Important Safe Operation PracticesMaintenance and Storage Contents of Hardware Pack Boxed Units Unpacking Assembling Your Snow ThrowerLoose Parts Boxed Unit CrateAssembly Crated Unit Attaching Handle AssemblyAttaching Shift Rod Hardware D Attaching Clutch Cables Attaching the Chute Assembly Hardware FAttaching The Chute Directional Control Shift Lever Know Your Snow ThrowerAuger Drive Control Traction ControlOperating Your Snow Thrower To Engage Drive To Stop EngineTo Engage Augers Recoil StarterChute Clean-Out Tool Drift Cutters If EquippedOperating Tips Traction Control and Shift Lever Making AdjustmentsAdjusting Shift Rod Chute AssemblyAuger Control Skid ShoesMaintaining Your Snow Thrower Drive WheelsLubrication Servicing Your Snow Thrower EngineShave Plate and Skid Shoes Belt Removal and Replacement AugersAuger Belts Friction Wheel Rubber Off-Season StorageDrive Belt Trouble Possible Causes Corrective Action Trouble Shooting GuideModels 614E, 644E, & 664G Part Description Models 614E, 644E, & 664GModels 614E, 644E, & 664G Jam Lock Nut 3/8-24 Compression Spring 736-0105 Drive Clutch Cable Auger Clutch Wheels Models 614E, 644E, & 664G Models 614E 1615 Models 644E & 664GSize Page MANUFACTURER’S Limited Warranty for

664G, 644E specifications

The MTD 644E and 664G tractors represent a significant leap in agricultural technology and efficiency, designed for diverse farming applications. Known for their robust build and advanced features, these models cater to both small and large-scale agricultural operations.

Starting with the MTD 644E, it is powered by a state-of-the-art diesel engine, providing a reliable performance that enhances productivity. The engine delivers impressive horsepower, allowing farmers to tackle various tasks effortlessly. Its fuel efficiency is a standout feature, ensuring reduced operational costs while still meeting demanding farm requirements. The 644E also features a compact design, making it highly maneuverable in tight spaces while maintaining a sturdy construction that guarantees durability in rugged conditions.

On the other hand, the MTD 664G offers slightly higher horsepower, making it suitable for more intensive agricultural work. This model is equipped with a more advanced engine management system that optimizes performance and fuel consumption, ensuring that farmers can work longer hours without frequent refueling. The 664G’s larger frame accommodates additional implements, expanding its versatility for tasks including plowing, tilling, and harvesting.

Both models are built with user-friendly controls, allowing operators to focus on their tasks without unnecessary distractions. The ergonomic seating and intuitive interface are designed to minimize fatigue during long working days. Additionally, these tractors come with a range of safety features, including effective braking systems and visibility enhancements that prioritize operator safety.

Technologically, both the 644E and 664G incorporate precision farming features that allow for better resource management. Implement compatibility enables seamless integration with various agricultural tools, giving users flexibility in their operations. Regular software updates ensure that the tractors remain at the forefront of agricultural technology, further enhancing performance and efficiency.

In summary, the MTD 644E and 664G tractors are tailored for modern farmers seeking reliability and efficiency. Their powerful engines, compact designs, and cutting-edge technology make them indispensable tools on any farm, capable of handling a multitude of agricultural tasks with ease and precision.
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