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Do this to both Right & Left Track Expanders. On ends of each Cap Screw, loosely apply

two (2) 3/8 Nuts with 3/8 Lock Washer between. Insert 3/8-16 x 3" Cap Screw into a

3/8 WI Washer and then through the two holes in rear of each Expander (you may have to
rotate Rear Axle so Cap Screw will pass through) and secure with 3/8 WI Washer and
3/8-16 Locknut. NOTE: Do not over-tighten this Cap Screw and crush the Expander.

4. Take 3/8-16 x 1 Cap Screw and insert into one"looped" end of #41 Spring. Insert

this Cap Screw Assembly into the 3/8" hole in lower outside rear of #1B Plate (right
"inside" of Body) and secure inside with 3/8-16 Locknut (see drawing for correct

positioning). NOTE: Insert Cap Screw so that Spring's "looped" end can lay "flat"
against #1B Plate. In a similar manner, attach the other "looped" end of #41 Spring to
the top inside of #11 Bar and secure with 3/8-16 Locknut. NOTE: In both cases, leave

The Cap Screws sufficiently loose to allow the Spring moderate swiveling action.

5. Attach #19 Drawbar under #1G Rear Pan with two 3/8-16 x 3/4 Cap Screws and secure

inside #1G Pan with 3/8 WI Washers and 3/8-16 Locknuts.

6. Take Gas Tank and Mounting Bracket Assembly and mount onto #5 Tank Mount - note

how the four holes and slots line-up with each other. Insert each of four 5/16-18 x 3/4
Cap Screws into 5/16 WI Washers and then into the (above) aligned slots and holes.
Secure each Cap Screw on other side with 5/16 WI Washer and 5/16-18 Locknut.

7. Mount the (above) Gas Tank Assembly to the top rear of Tractor Body aligning the
two 5/16" holes in #1D Brace and two 5/16" holes in the #1G Pan with the four remaining
slots in #5 Tank Mount. Insert each of four 5/16-18 x 3/4 Cap Screws into 5/16 WI

Washer and from outside, insert into the four slots of #5 Mount. Secure these Screws

inside Body with 5/16 WI Washers and 5/16-18 Locknuts.

8. Mount #10 Bearings (with 10R on right side and 10L on left side and with 10C Pull
pointing up) between #lB Plate and their respective #1AL or 1AR Left or Right inside

body wall, being sure #10C Pull protrudes up through 1/2" hole in top rear of #1AR and

1AL Wall. Loosely secure 3/8 WI Washer and 3/8-16 Locknut to protruding #10C Pull.

NOTE: Holes in #10 Bearing must line up with slots in its respective #1B Plate and #1AL

or 1AR Wall. Using 5/16 WI Washers over 5/16-18 x 3/4 Cap Screws, insert into slots of

#1B Plate and #1AL or 1AR Wall. Loosely secure inside with 5/16 WI Washers and 5/16-18

Locknuts.

NOTE: Check that above Cap Screws on #1B Plate and #1AL or 1AR Wall point toward each

other on each side and that Locknuts are against #10 Bearings in each case.

9. Slide three 7/8 WI Washers onto the end of each #20 Sprocket and Shaft. From out-
side the Body, insert each shaft into the Oilite Bushings in #10 Bearings. Take a
straightedge and align the faces of the 54 tooth Sprocket on the #22 Drive Wheel with
the 8 tooth Sprocket on the #20 Sprocket & Shaft. This alignment can be accomplished by

adding more or removing 7/8 WI Washers from the #20 Shaft.

10. On each side of Tractor body, wrap a length of #38 Roller Chain around 8 tooth

Sprocket, on #20 Shaft and around 54 tooth Sprocket of #22 Drive Wheel - secure with
Connector Link. Draw up on each #10 Bearing Assembly and secure by now tightening the

six (5) 5/16-18 Locknuts on each #10 Bearing.

NOTE: Tighten 3/8-16 Lock Nut on #10C Pull just enough to hold #10 Bearing in place,
but do not over-tighten and draw #10 Bearing up any further as it will cause #38 Chain

to be over-tightened and result in premature wear of chain. (The #10C Pull is just

used to keep the #10 Bearing in place when Dozer is working under extreme loads.)

Summary of Contents for MINI-DOZER

Page 1: ...licenses any individual or firm to reproduce the Mini Dozer in any form for resale To do so will constitute direct violation of all pat ents applicable at that time To reproduce these Plans and Instructions in any form will constitute direct violation of our Copyright C F STRUCK CORP Copyright 1977 by C F Struck Corp ...

Page 2: ...L Battery Wire 7 5 heavy black 1 4 ID loop one end 3 16 ID loop other end 6M Wire red 4 5 w fuse Light Kit only 60 Wire black 4 6U Wire blue 8 Light Kit only 6V Sealed Beam Light 2 Light Kit only 6W Wire green 10 6X Wire black 10 6Y Wire red 15 5 MD1207 6Z Wire red 6 5 MD1207 6 A A Solenoid 6 V A Tube Light Kit only Cap Screw 1 4 20 x 3 4 3 Cap Screw 5 16 18 x 3 2 Light Kit only Carriage Bolt 5 16...

Page 3: ...Exhaust Tube 3 4 ID MD1207 39B Flexible Exhaust Tube 1 ID MD1200 1612 1600 40 Engine w instruction booklet 7 hp Lawson Tecumseh Recoil Start MD1207 12 hp Lawson Tecumseh Electric Start MD1200 1612 16 hp Lawson Tecumseh Electric Start MD1600 41 Spring tension 8 long 42 Throttle Control long 43 Choke Control short 44 Bulb Muffler MD1207 45 Gas Line 46 Steel Seat Pan 47 Brake Assembly 47A Shaft 47B T...

Page 4: ...fy your understanding please note that MD1200 series tractors cover models MD1207 MD1200 and that MD1600 series tractors cover models MD1612 MD1600 2 As you proceed through the various assembly steps note that each step refers to all model Mini Dozers unless a specific model is noted within the step 3 It is recommended that a Liquid Lock Sealant be applied to ALL set screws cap screws nuts and any...

Page 5: ...r and from outside insert into the four slots of 5 Mount Secure these Screws inside Body with 5 16 WI Washers and 5 16 18 Locknuts 8 Mount 10 Bearings with 10R on right side and 10L on left side and with 10C Pull pointing up between lB Plate and their respective 1AL or 1AR Left or Right inside body wall being sure 10C Pull protrudes up through 1 2 hole in top rear of 1AR and 1AL Wall Loosely secur...

Page 6: ...e is pointing toward center of Tractor Body and that 33 Belt is held between the groove of 27 Pulley and the 1 4 round rod welded to 23 Handle Assembly Tighten Cap Screw so it will still be able to slide freely in 3 8 slot in 1H 14 Assemble the 30 and 31 Pulleys onto their respective 21 Upper and Lower Shafts NOTE A On models MD1200 MD1207 the 30 Pulleys are both of the V type on models MD1612 MD1...

Page 7: ...afts Note Drawings to check that 31 Pulleys on Upper 21 Shaft align with mating 29 Pulleys mounted to the outside on 20 Shafts Also check that the 31 Pulleys on Lower 21 Shaft align with mating 29 Pulleys mounted to the inside on 20 Shafts Tighten all set screws Slip 34 Belts around mating Pulleys per above alignment instructions 21 Assemble 15R and 15L Clutches at this time check Drawings to note...

Page 8: ...Guide should start to hit the backside of the 34 Belt and start to pull it in to eliminate any excessive slack and release its grip on 31 Pulley 25 Take Engine and slide on hub first 32 Pulley onto Engine s Crankshaft Slide 1 4 sq x 1 Key into Pulley s hub A On 7 hp Engine Install the two 17 Belt Guides using a 5 16 Lock Washer and 5 16 WI Washer over ends of two 5 16 24 x 1 Cap Screws which are e...

Page 9: ...ver to the fast position NOTE To hold a particular Throttle setting give the control a 1 4 turn to lock in place 30 Insert the shorter 43 Choke Control into the remaining 9 16 hole on right of 1C Brace Secure below with Nut and Lock Washer Run Control casing rearward and loop around inside 1M Baffle and insert into Bowden Wire Clamp mounted to clip bolted to Engine s housing Engage offset end of B...

Page 10: ...lted to the inside of Wall for BH 100 Hitch bolted to outside of 1AR Wall for ML 40 Lift 35 Assembly for Electric Start and Lights NOTE Before assembly read these instructions thoroughly as improper assembly may lead to damage of the electrical system A Mount 6E Switch into 5 8 hole in left rear of 7 Cover Mount from below Cover and keep lock washer behind Cover and on top secure with Nut See Wiri...

Page 11: ...e 6U Wire and from remaining end of blue 6N Wire Wind together the wire ends of 6V Light left Light only the remaining end of blue 6N Wire and one end of blue 6U Wire to form a pigtail Slip the 1 2 dia Electrical Connector over the above pigtail and screw it on tightly making sure none of the pigtail s wires are exposed Similarly connect remaining end of blue 6U Wire to wire from 6V Light on right...

Page 12: ...h end of four 5 16 18 x 1 Cap Screws Screw these Cap Screws into the bottom of each of the 5 16 18 Weldnuts welded to underside of Left 1AL Body Wall and tighten NOTE Insert left front 5 16 18 x 1 Cap Screw into 5 16 ID loop terminal of 6Z Wire before inserting into its respective Weldnut Tighten 37 Take 45 Gas Line and slip a Pinch Clip over each end and slide up about 1 Slip one end of the Gas L...

Page 13: ...nly through the Fender slot and Footwell hole but also through the slot in the 6C Brace holding 6 Battery Box above similarly secure above with 5 16 WI Washer and 5 16 18 Locknut 43 Insert 47B Tube of 47 Brake Assembly into 4C Clip welded to the underside of 4A Cover and insert 48 Pin and secure with 5 8 Snap Ring NOTE 47D Strip must be facing underside of 4A Cover Insert 3 8 16 x 2 1 2 Carriage B...

Page 14: ...forward you should now have both left and Right Tracks going forward Also conversely when you pull back on both 15R and 15L Handles the Tracks should go rearward C Following Manufacturer s instruction booklet fill Engine with proper grade of oil and Gas Tank with proper gasoline Check that you have greased the Zerk fittings on both 10 Bearings 22 Rear Drive Wheels and 25 Front Idler Wheels Replace...

Page 15: ...tension and set the transmission upper and lower 21 Power Shafts in motion Now firmly holding a Control Handle 15R and 15L in each hand you can move the Tractor forward by pushing forward on both 15 Handles move rearward by pulling back on both 15 Handles Make a right turn by pushing forward on the 15L Control Handle while simultaneously pulling rearward on the Right 15R Control Handle Left turns ...

Page 16: ...umping is a problem or if operating in loose gravel or snow 6 Check Battery water level every three months 7 Check that 42 Throttle and 43 Choke controls are able to be operated freely with out sever binding 8 Give a once over to the complete Tractor looking for loose or misadjusted parts Vibration or rattling is always a sign of trouble hence if these conditions appear stop the Tractor immediatel...

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