Remington RM4620 User Manual

769-08938 / 00 09/13
Operator’s Manual
2-Cycle Chain Saw
RM4218 / RM4620
TABLE OF CONTENTS
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Know Your Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Oil and Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Starting and Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
All information, illustrations, and specifications in this manual are based
on the latest product information available at the time of printing. We
reserve the right to make changes at any time without notice.
Copyright© 2013 MTD SOUTHWEST INC, All Rights Reserved.
DO NOT RETURN THIS UNIT TO THE RETAILER. PROOF OF
PURCHASE WILL BE REQUIRED FOR WARRANTY SERVICE.
For assistance regarding the assembly, controls, operation or
maintenance of the unit, please call the Customer Support Department
at 1-866-206-2707 in the United States or 1-877-696-5533 in Canada.
Additional information about the unit can be found on our website at
www.remingtonpowertools.com.
For service, please call the Customer Support Department to obtain
a list of authorized service dealers near you. Service on this unit,
both within and after the warranty period, should only be performed
by an authorized and approved service dealer. When servicing, use
only identical replacement parts.
SAVE THESE INSTRUCTIONS
SERVICE
IMPORTANT: Read this manual thoroughly before using this product. Follow all instructions.

Remington RM4620 Specifications

General

Engine Displacement	46 cc
Bar Length	20 inches
Chain Pitch	0.325 inches
Oil Capacity	8.5 oz
Type	Gas
Chain Gauge	0.050 inches

Summary

General Safety Instructions and Warnings

Key Safety Operating Instructions

Crucial safety rules for operating the unit and handling fuel.

Safe Operation Practices

While Operating Safety Guidelines

Kickback Safety Awareness

Details kickback hazards and how to avoid them.

Kickback Prevention and General Warnings

Kickback Safety Precautions

Steps to reduce the chance of accidents or injuries related to kickback.

Fueling and Oil Mixing Procedures

Fuel and Oil Mixing Guidelines

Instructions for correctly mixing unleaded gasoline and 2-cycle oil.

Fueling the Unit Safely

Starting and Stopping Procedures

Step-by-Step Starting Instructions

Detailed guide on how to start the engine, including choke and primer use.

Stopping and Emergency Stops

Operation and Performance Tips

Key Operation Warnings

Work Area Preparation and Cutting Basics

Preparing a Safe Work Area

Proper Unit Handling and Grip

Felling Trees: Safety and Procedure

Felling Safety Precautions

Essential safety rules for felling trees, including avoiding hazards and escape routes.

Felling Procedure Steps

Guides for removing buttress roots and making the undercut.

Felling Back Cut and Limbing

Making the Felling Back Cut

Instructions for performing the back cut to fell the tree, including hinge management.

Limbing a Fallen Tree

Bucking Logs: Safety and Techniques

Bucking Safety Precautions

Safety rules for cutting logs, including dealing with stress and support.

Bucking Procedure Overview

General steps for cutting logs, including underbucking and overbucking.

Cutting Logs Under Stress

Cutting Fully-Supported Logs

Bucking and Pruning Techniques

Overbucking and Underbucking Details

Pruning Tree Limbs Safely

Safety warnings and procedures for cutting branches from living trees.

Maintenance Schedule and Customer Responsibilities

Required Maintenance Schedule

Defines the frequency and types of maintenance required for the unit.

Customer Maintenance Responsibilities

Lists tasks the user must perform to maintain the unit.

Bar and Chain Lubrication

Adding Bar and Chain Oil

Chain Tension Adjustment

Adjusting Chain Tension Correctly

Detailed steps for adjusting chain tension for optimal performance and safety.

Guide Bar and Saw Chain Maintenance

Replacing Guide Bar and Saw Chain

Saw Chain Sharpening

Sharpening Saw Chain Cutters

Detailed steps and angles for filing saw chain cutters for optimal performance.

Depth Gauge Adjustment

Guide Bar Maintenance Procedures

Guide Bar Cleaning and Inspection

Engine Adjustments and Spark Plug Service

Adjusting Idle Speed

Procedure for adjusting the engine's idle speed for smooth operation.

Spark Plug Maintenance

Cleaning, Storage, and Long-Term Care

General Cleaning Procedures

Steps for cleaning the unit after use.

Storing the Chainsaw

Troubleshooting Common Problems

Engine Starting and Running Issues

Solutions for problems like engine not starting, idling, or lacking power.

Saw Chain and Guide Bar Problems