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Rev: 8/2008 

 

3 of 21 

36B, 36BX, 36H, 36HX, 52H, 52HX 

DEK

® 

is exclusively distributed by GXi International, LLC 

Heavy Duty Power Equipment 

About the DEK Belt Drive Lawn Mower Manual 

Congratulations on the purchase of your new DEK commercial mower.  We at GXi International are confi-
dent that this mower will provide you with the best performance, outstanding quality, and great  
durability when operated and maintained as directed in this manual. 

 

1.  This manual contains assembly, operating, safety, adjustment, maintenance, and troubleshooting instructions.  

BEFORE OPERATING YOUR LAWN MOWER, CAREFULLY READ THIS MANUAL IN ITS ENTIRITY. 

2.  This owner’s manual is considered a permanent part of the mower.  It must be available to all of the operators 

and/or person(s) servicing the mower.  Should the mower be resold, this manual must remain with the mower. 

3.  All information, illustrations, and specifications contained in this manual were in effect at the time of the publica-

tion.  GXi International reserves the right to add, delete or modify specifications and/or designs without notice. 

4. 

If you ever have questions in regards to the operation, maintenance or safety of your mower, please contact the 

DEK technical service line

 at 1-800-393-0668.

 





 
 



 
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Table of Contents 

Safety Information 

Safety Warnings .………………………………………………………………...………………………………………….. 
Before Use of Equipment …………………………………………………………………………………………………...  
Operation of Equipment – Safety Cautions ………………………………..……………………………………………... 
Safety Information Decals ………………………………………………………………………………………………….. 

 
Operating the Mower 

Product Specifications……………………………………………………………………………………………………….. 
Control Panel Component Identification…………………..…………...………………………………………………….. 
Lawn Mower Component Identification...…………………………………………………………………………………... 
Assembly Instructions…………………………………………………………………………………………….7 through 11 
Starting the Engine……………………………………………………………………………………………………….... 
Moving Forward.……………………………………………………………………………………………………………… 
Turning the Mower…………………………………………………………………………………………………………… 
Stopping the Mower………………………………………………………………………………………………………….. 
Moving in Reverse…………………………………………………………………………………………………………… 
Mowing………………………………………………………………………………………………………………………... 
Changing Cut Height..……………………………………………………………………………………………………….. 
Removing Blades……………………………………………………………………………………………………………. 

 
Service and Maintenance 

Maintenance Schedule………………………………………………………………………………………………...…… 
Fuel……………………………………………………………………………………………………………………………. 
Engine Oil…………………………………………………………………………………………………………………….. 
Air Filter………………………………………………………………………………………………………………………. 
Tire Pressure………………………………………………………………………………………………………………… 
Blades………………………………………………………………………………………………………………………… 
Cleaning the Mower…………………………………………………………………………………………………………. 
Lubrication Points……………………………………………………………………………………………………………. 

 
Adjustments 
 

   Drive Belt Adjustments………………………………………………………………………………………………………. 

 

   Wheel Brake Adjustments……………………………………………………………………………………………………. 

Engine to Blade Belt…………………………………………………………………………………………………………. 
Blade to Blade Belt………………………………………………………………………………………………………….. 
Engine to Transmission Belt……………………………………………………………………………………………….. 
Safety Interlock System…………………………………………………………………………………………………….. 

 
Troubleshooting Guide…………………………………………………………………………………………………………….. 
 
Warranty……………………………………………………………………………………………………………………………... 

Summary of Contents for 36B

Page 1: ...Location of Purchase _______________________ Serial Mower _______________________ Serial Engine _______________________ Serial Transmission _______________________ Have the following information read...

Page 2: ...ted to exceed 500 hours of usage The pressure washers include industry leading corrosion resistance Never go Flat tires a folding frame design for compact storage and many other innovations Accessorie...

Page 3: ...the time of the publica tion GXi International reserves the right to add delete or modify specifications and or designs without notice 4 If you ever have questions in regards to the operation maintena...

Page 4: ...level surface with the ignition switch off key removed and blades dis engaged Also the spark plug wire should be off of the spark plug 1 Walk around the mower and look for any fluid spills or leaks on...

Page 5: ...ements 1 5 4 5 increments Blade Engagement Manual clutch Manual clutch Manual clutch Manual clutch Manual clutch Manual clutch Blade Tip Speed 18 750 ft min 18 750 ft min 18 750 ft min 18 750 ft min 1...

Page 6: ...l find a diagram of the control panel Please take the time to familiarize yourself with the mower controls Blade Control Lever Brake Operator Presence Controls Throttle Choke Control Key Switch Forwar...

Page 7: ...ain this bolt and washer for future use B Unscrew the fastener holding the bolt to the steel ship ping rack Set the nut and bolt aside It will be re used in the mower assembly process C Remove the mow...

Page 8: ...cured with an initial preset for the upper hole position lower handle bar posi tion If the lower hole position upper handle bar posi tion is used the rod connections must be adjusted 3 Retighten the p...

Page 9: ...ole location for higher handle bar positioning 3 Unfasten the blade activation rod from the control handle insert it through the hole on the chassis of the mower and attach the rod to the blade activa...

Page 10: ...Models The 36 models have the following connections 1 The 36 hydro drive model has the same as connection 1 for the 52 models discussed above connecting the blade activation safety switch located unde...

Page 11: ...at the cables are clamped to provide full travel for the levers on the control panel WARNING FUEL LEAKS OR A LOOSE FUEL TANK OR A LOOSE FUEL VALVE CAN LEAD TO SEVERE INJURY OR DEATH ENSURE ALL CONNECT...

Page 12: ...s In order to stop your DEK mower gently and evenly squeeze up on both of the traction control levers brake clutch levers until the mower comes to a complete stop Then using your thumbs push down on t...

Page 13: ...raulic fluid to bypass the drive wheels and allow the drive wheels to move freely NOTE Release the bypass levers when the desired mower move ment is complete to reengage the hydro drive units To relea...

Page 14: ...ght 1 Park the mower and level ground and block the rear wheels to prevent accidental rollback 2 Raise the front end of the mower using a jack stand 3 Using two 15 16 box end wrenches Use one wrench t...

Page 15: ...revent accidental contact If adjustment or maintenance is being performed after operation of the mower allow the unit to cool since heat build up could cause severe burns WARNING DANGER Gasoline is hi...

Page 16: ...ge 1 Front wheel shafts 2 locations one on each wheel shaft 2 Spindles 2 locations for 36 and 3 locations on 52 mower decks Note the lower spindle bearing is sealed on the bottom and open on the top T...

Page 17: ...table swivels attached to threaded rods in the belt clutch brake assembly The objectives of fine tuning the adjustment are to 1 Equalize the feel and action between pistol grips on each side of the mo...

Page 18: ...t C on the sensor shaft 2 Adjust switch location by turning the nuts 3 Tighten the locking nut when proper adjustment is achieved Method 3 relocate mounting holes In rare instances whereby the compone...

Page 19: ...Clean or replace air filter 6 Add engine oil 1 Adjust switch p 18 2 Adjust belt p 17 and 18 3 Remove foreign material Note sometimes firmly pushing the blade control lever into the OFF position can r...

Page 20: ...Slow down while cutting 3 Let grass dry to stand up 4 Let grass dry to stand up 5 Add air pressure to low tires 6 Set deck at equal heights 7 Take blades off and install correctly 8 Clean out debris 1...

Page 21: ...ip In particular this warranty does not cover contaminants in the fuel or oil damage caused by not following the prescribed warnings and operating practices failure to follow proper maintenance and st...

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