MTD 1R61RU - User Manual

Need help?

Do you have a question about the MTD 1R61RU and is the answer not in the manual?

Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document is an operator's manual for a 132 cc OHV vertical shaft engine, providing comprehensive information on its safe operation, setup, maintenance, troubleshooting, and warranty. The manual emphasizes safety throughout, with clear warnings and instructions to prevent personal injury and property damage.

Function Description:

The 132 cc OHV vertical shaft engine is designed to power various outdoor equipment. Its primary function is to convert fuel into mechanical energy to drive the equipment it's attached to. The engine is built to operate according to safe operation practices outlined in the manual, ensuring reliable performance when properly maintained.

Important Technical Specifications:

Engine Type: 132 cc OHV (Overhead Valve) Vertical Shaft Engine.
Oil Capacity: 400 ml (14 oz).
Recommended Oil: 4-stroke, or an equivalent high detergent, premium quality motor oil certified to meet or exceed U.S. automobile manufacturer's requirements for service classification of a minimum level SJ (or higher letter ratings like SL and SM grades). SAE 10W-30 is recommended for general, all-temperature use. A 5W-30 synthetic oil can be used for cold weather (below 40°F). Non-detergent or 2-stroke engine oil should not be used.
Fuel Type: Regular unleaded gasoline with a minimum of 87 octane. Can use gasoline with up to 10% ethanol (E10) or 15% MTBE (methyl tertiary-butyl ether). E15 or E85 gasoline, oil-gasoline mixtures, or dirty/stale gasoline should not be used.
Spark Plug Gap: 0.030 inches.
Emission Control Systems (if equipped): Engine Modification (EM), Oxidizing Catalyst (OC), Secondary Air Injection (SAI), and Three Way Catalyst (TWC).
Warranty Period: Two years for the emission control system.

Usage Features:

Starting Systems: The engine may feature either an Auto-Choke System (automatic choke, no manual choke or primer) or a Primer System (manual primer on the engine).
- Auto-Choke System: To start, depress and hold the blade control handle against the upper handle, then pull the starter grip rapidly.
- Primer System: Push the primer 3 times (5 times in temperatures below 50°F), wait two seconds between pushes, then depress and hold the blade control handle against the upper handle, and pull the recoil starter rapidly.
Stopping Engine: Release the blade control or turn off the engine switch (if equipped).
Fuel Cap: Removable for adding fuel. Some engines may have a dust cap for shipping that needs to be removed and discarded before installing the fuel cap.
Oil Fill Cap: Removable for checking and adding oil.
Oil Drain Plug: Located on the side, and on some units, a bottom drain may also be accessible for draining oil.
Starter Handle: Used to manually start the engine by pulling the cord.
Primer (If Equipped): Located on the left side of the engine, next to the air cleaner. Pressing it forces fuel into the carburetor to aid starting.
Air Cleaner: Protects the engine from dust and debris. May be a foam or paper element depending on the starting system.

Maintenance Features:

Regular Inspections:
- Engine Oil Level: Check before each use or every 5 hours.
- Spark Plug: Inspect annually or every 50 hours. Clean and adjust gap (0.030 in.) or replace as needed.
- Air Cleaner: Inspect annually or every 25 hours. Service (clean foam, replace paper) as needed.
- Muffler and Cylinder Area: Remove accumulated combustibles before each use.
- Fuel Line, Tank, Cap, and Fittings: Check frequently for cracks or leaks.
- Bolts and Screws: Check for proper tightness at frequent intervals.
- Safety Devices: Check for proper operation regularly.
Oil Change: Change annually or every 50 hours, or more frequently under heavy load or high ambient temperature. Drain oil when the engine is warm.
Air Cleaner Service:
- Foam Element: Clean with liquid detergent and water, squeeze dry, and lightly oil with engine oil.
- Paper Element: Cannot be cleaned, replace annually or every 100 operating hours, or more often in dusty conditions.
Fuel Filter Service: Replace annually or every 100 operating hours, or more often if using old gasoline. Requires draining the fuel tank.
Engine Cleaning: Periodically remove dirt build-up from the engine, finger guard, and around the muffler. Use a brush or compressed air. Avoid spraying with water to prevent fuel contamination or damage to the air cleaner/muffler.
Storage:
- Run the engine until it's out of fuel or use a fuel stabilizer if storing for more than 30 days.
- Change oil before storage.
- Pour 1/2 oz of engine oil into the cylinder, replace the spark plug, and crank slowly to distribute oil.
- Clean debris from the engine, under the finger guard, and around the muffler. Touch up damaged paint and coat other areas with a light film of oil to prevent rust.
- Store in a clean, dry, well-ventilated area away from flames, pilot lights, or spark-producing equipment.
- Keep the engine level to prevent fuel or oil leakage.
Emissions Warranty: The engine's emission control system is warranted for two years. Owners are responsible for performing required maintenance and retaining receipts. Warranty claims may be denied for abuse, neglect, improper maintenance, or unapproved modifications. Warranted parts include fuel metering system components (carburetor, fuel pump, fuel tank, etc.), air induction system (air cleaner, intake manifold), ignition system (spark plug, magneto), exhaust system (catalytic converter, SAI), and evaporative control components (fuel hose, clamps, tethered fuel cap, carbon canister, vapor lines).