Komatsu RedMax CV225 User Manual (English)

Rebekah HernandezAug 1, 2025

What to do if Komatsu RedMax CV225 engine starts but does not keep running?

S
Susan HernandezAug 1, 2025
If your Komatsu Tiller engine starts but does not keep running, or if it's hard to restart, it could be due to several reasons. The fuel might be incorrect, or the engine might be out of its normal operating range, which requires adjustment. Carbon buildup could also be a factor, and you should wipe it away. Another potential cause is that the engine is clogged with dust, requiring you to wash it.

Brand	Komatsu
Model	RedMax CV225
Category	Tiller
Language	English

Brand

Komatsu

Model

RedMax CV225

Safety Rules and Warnings

Special Safety Information

Highlights specific symbols and emphasizes heeding warnings for personal protection.

Safety Decal Information

Explains the importance and location of warning and information decals on the trimmer.

Warnings - Do's

Provides recommended actions and precautions for safe tiller/cultivator operation.

Warnings - Don'ts

Details actions to avoid for safe operation, covering hand use, slopes, and maintenance.

Engine/ Fuel Warnings

Fueling Do's

Advises on proper fueling, storage, and handling of gasoline and oil mixtures for the engine.

Fueling Don'ts

Warns against unsafe fueling practices, unattended operation, and improper ventilation.

Assembly Instructions

Assembly Parts List

Lists all components included with the Tiller/Cultivator for assembly verification.

Assemble Lower Handles

Step-by-step guide for attaching the lower handle sections to the tiller/cultivator.

Assemble Upper Handles

Instructions for attaching the upper handle sections and carrying handle.

Assemble Tines for Tilling

Details attaching tines to the axle for the tilling function.

Fuel Mix and Fueling

Mixing Fuel

Provides instructions on correctly mixing gasoline and two-stroke oil for the engine.

Fueling the Unit

Guides on safely filling the tiller/cultivator's fuel tank with the prepared fuel mixture.

Starting Instructions

First-Time Starting

Step-by-step guide for initiating the engine for initial operation.

Starting a Warm Engine

Procedure for restarting the engine when it is already warm.

Additional Starting Info

Covers stopping the engine, choke, and tips for extending engine life.

Troubleshooting Starting Issues

Starting a Flooded Engine

Troubleshooting steps for an engine that may be flooded due to improper starting.

Alternative Starting Procedure

Provides an alternative method for starting the engine if the primary procedure fails.

Tilling Operation

Control Tilling Depth

Explains how to adjust the tiller's depth control for different needs.

Cultivating Operation

Switch to Cultivating Position

Instructions on reconfiguring tines for cultivating from the tilling position.

Maintenance Procedures

Air Filter Maintenance

Procedure for inspecting, cleaning, or replacing the air filter for engine performance.

Idle Speed Adjustment

Guidance on adjusting engine idle speed for optimal operation and to prevent stalling.

Fuel System Blockages

Steps to clear obstructions from the fuel system for proper fuel delivery.

Spark Plug Maintenance

Information on checking, cleaning, and replacing the spark plug for engine starting.

Reseating the Flange

Instructions for realigning the engine flange to the worm-gear housing if tines are not turning.

Worm-Gear Housing Grease Check

Procedure for inspecting and replenishing the grease level in the worm-gear housing annually.

Muffler and Spark Arrester

Guidance on inspecting the muffler for damage and cleaning the spark arrester.

Intake Air Cooling Vent Check

Advice on checking and clearing air vents and cylinder fins to prevent overheating.

100-Hour Maintenance

Tasks to perform after 100 hours of use, including muffler cleaning and tightening fasteners.

Storage and Restarting

Preparing for Storage

Steps to prepare the tiller/cultivator for storage, including draining fuel and cleaning.

Preparing for Restarting

Instructions for getting the tiller/cultivator ready for use after a period of storage.

Troubleshooting Guide

Starting Failure Troubleshooting

Diagnoses common causes and solutions for engine starting failures.

Engine Running Issues

Addresses issues where the engine starts but then stops or is hard to restart.

Limited Warranty

Emission Parts Warranty

Details the 2-year warranty coverage for emission control system components.

Other Parts Warranty

Outlines warranty terms for all other parts, covering home and other uses.

California Emission Warranty

Manufacturer Warranty Coverage

States the 2-year warranty period for emission-related parts on engines.

Owner Responsibilities

Defines owner duties regarding maintenance and proper use to maintain warranty coverage.

Komatsu RedMax CV225 User Manual

Table of Contents

Questions and Answers:

Komatsu RedMax CV225 Specifications

Summary

Specifications