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Service Manual

MTD Products LLC - Product Training and Education Department

FORM NUMBER 769-01424

9/2004

MCCULLOCH CHAIN SAW - MS1436NAV

NOTE: These materials are for use by trained technicians experienced in the service and repair of outdoor power equipment of the 
kind described in this publication, and are not intended for use by untrained or inexperienced individuals.  These materials are 
intended to provide supplemental information to assist the trained technician.  Untrained or inexperienced individuals should seek 
the assistance of an experienced and trained professional. Read, understand, and follow all instructions and use common sense 
when working on power equipment. This includes the contents of the product’s Operators Manual, supplied with the equipment. No 
liability can be accepted for any inaccuracies or omission in this publication, although care has been taken to make it as complete 
and accurate as possible at the time of publication.  However, due to the variety of outdoor power equipment and continuing 
product changes that occur over time, updates will be made to these instructions from time to time.  Therefore, it may be 
necessary to obtain the latest materials before servicing or repairing a product.  The company reserves the right to make changes 
at any time to this publication without prior notice and without incurring an obligation to make such changes to previously published 
versions. Instructions, photographs and illustrations used in this publication are for reference use only and may not depict actual 
model and component parts.  © Copyright 2005 MTD Products Inc. All Rights Reserved. 

Summary of Contents for MS1436NAV

Page 1: ...the product s Operators Manual supplied with the equipment No liability can be accepted for any inaccuracies or omission in this publication although care has been taken to make it as complete and acc...

Page 2: ......

Page 3: ...en 2 Spark Plug 3 Removal of Brake Assembly 3 Removing the Chain and Bar 4 Removal of Clutch and Drum Assembly 4 Removal of the Chain Oiler 5 Starter Servicing 7 Air Gap 9 Flywheel Removal 9 Carbureto...

Page 4: ......

Page 5: ...procedures for proper setup and operation Additional information can be found in the 2004 MTD Update Manual Form number 769 00960 IMPORTANT Prior to servicing the chain saw remove the spark plug wire...

Page 6: ...k cap 2 3 Bend a piece of soft wire into a hook shape 2 4 Reach into fuel tank opening and hook fuel line Carefully pull the fuel line toward the opening until you can reach it with your fingers NOTE...

Page 7: ...3 Disconnect the wire connector from the spark plug by pulling and twisting at the same time Figure 6 4 4 Using the scrench remove the spark plug See Figure 7 4 5 Check electrode gap with wire feeler...

Page 8: ...sembly make certain that the tab from the tensioning screw fits into the hole in the chain bar See Figure 10 See Figure 11 7 REMOVAL OF CLUTCH AND DRUM ASSEM BLY 7 1 Remove the spark plug from the uni...

Page 9: ...bly Anti Dust Cap Hex Nut 7 7 Inspect and repair as needed NOTE During assembly the machined groove in the drum sprocket assembly must engage the tabs on the nylon worm gear See Figure 15 8 REMOVAL OF...

Page 10: ...of the pump shaft from the housing See Figure 18 8 7 Remove the shaft from the oil pipe Inspect the shaft for damage See Figure 19 8 8 Using a small screwdriver remove the ends of the two hoses from t...

Page 11: ...2 8 10 Torque the nut securing the clutch drum assem bly to the crankshaft to during assembly Figure 21 Pump Housing Figure 22 Felt Washer 9 STARTER SERVICING 9 1 Using a T 25 Torx wrench remove the f...

Page 12: ...over and replace the spring See Figure 27 9 7 If the starter cord is broken attach one end of the starter rope to the pull handle Pass the lose end of the cord through the starter housing assembly and...

Page 13: ...he engine will occur 11 1 Remove the spark plug from the engine 11 2 Place a length of starter cord into the spark plug opening This will ease removal of the flywheel 11 3 Using a T 25 Torx wrench rem...

Page 14: ...t out the foam air filter 12 4 Using a small screwdriver lift out the metal screen 12 5 Using a 8mm socket remove the two nuts securing the air filter assembly to the carburetor See Figure 33 12 6 Usi...

Page 15: ...re 37 NOTE In order to remove the throttle cable from the carburetor it will be necessary to remove the left side of the handle assembly and create slack in the cable 12 12 Using a T 25 Torx driver re...

Page 16: ...eyond repair or you can purchase a rebuild kit and rebuild the carburetor in about 15 minutes 12 19 Install the carburetor in the reverse order of dis assembly 13 CARBURETOR ADJUSTMENT The carburetor...

Page 17: ...IN TENSION ADJUSTMENT 14 1 Chain tension adjustments can be made using a standard screwdriver See Figure 43 NOTE Follow proper chain tensioning proce dures outlined in the User Manual Figure 43 Tensio...

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