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LM-92164N page 2 of 4

DIMENSIONS

TYPICAL INSTALLATION 

8-1/4 in.

(210 mm)

Crankcase

Vent 

1/2-14 NPT

Oil Inlet Connection

*

 

1/2-14 NPT

with removable 

screen

6 in.

(152 mm)

Test

Knob

Electrical

Conduit

1/2-14 

NPT

 Monitoring Port Connection

3 places, 3/4-14 NPT

*

Applies to level maintaining models only.

7-3/16 in.

(183 mm)

5-3/16 in.

(132 mm)

3/8-16 
UNC-2B
Mounting
Holes, 2 places

2-3/4 in.

(70 mm)

Snap Switch
Case Assembly

5-15/16 in.

(151 mm)

LM300 Series Enclosures

Mounting Brackets with Hardware

4.50 in.

(114 mm)

5.20 in.

(132 mm)

2.50 in.

(64 mm)

Hole .88 in.
(22 mm) dia.

1/4-20 NC

2 places

.376 in.
(10 mm)
minimum
bottom surface
2 places

1.75 in.

(44 mm)

7.50 in.

(191 mm)

Slot, .390 in. (10 mm)
x 4.71 in. (120 mm)
3 places

6.69 in.

(170 mm)

Slot, .390 in. (10 mm)
x 2 in. (51 mm)
4 places

4.50 in.

(114 mm)

5.19 in.

(132 mm)

15000371

pipe bracket

15000370

universal bracket

The dimensions below are for the optional -EX model enclosure. The
standard model enclosure dimensions are the same except the height and
width which are: 7 in. (178 mm) H, 7-7/8 in. (200 mm) W.

Mounting (all LM300 Series models)

NOTE: Mount the LM300 series level maintainers as close as possible
to the crankcase. Also, excessive vibration can cause overfill. Be sure
mounting brackets are supported.

The following instructions are based on the usage of the pipe and universal
mounting brackets shown above. 

Pipe Bracket Mounting

1. 

Mount a nominal 1/2 inch (21 mm) diameter pipe to the deck of the engine. 

2. 

Install the pipe bracket to the LM300 using two 3/8-16 UNC x 1 inch

bolts supplied. See Figure 1A.  

3. 

Slip the LM300 onto the pipe and install the two adjustment bolts. Each

adjustment bolt consists of a 3/8-16 UNC x 1 inch bolt and two nuts. See
Figure 1B. 

DO NOT

tighten the adjustment screws too tightly because

you will have to  adjust the LM300 later in the installation process.   

Mounting with Universal Bracket

The universal bracket has two mounting methods: deck mounting and 
pan mounting. 

Deck Mounting

1. 

Install the universal bracket to the deck as shown in Figure 2A with two

flat washers and two 3/8 inch (10 mm) diameter bolts (not supplied). 

2. 

Mount the LM300 to the universal bracket using two 3/8-16 UNC x 1

inch (25 mm) bolts supplied (Figure 2B). 

DO NOT

tighten the

adjustment screws too tightly. You will have to adjust the LM300 later in
the installation process.  

Pipe

Crankcase

Adjustment
Bolts

Figure 1B

LM300

Pipe
Bracket

Figure 1A

Adjustment
Bolts

Figure 2B

Crankcase

Deck

Universal
Bracket

Threaded
hole

Figure 2A

Additional Hardware

Supplied

(4) 

3/8-16 UNC x 1 inch 

(25 mm) screws

(4) 

3/8-16 nut

(4) 

3/8 I.D. lock washer

(2) 

3/8 I.D. flat washer

Additional Hardware

Supplied

(2) 

3/8-16 UNC x 1 inch 

(25 mm) screws

(4) 

3/8 I.D. flat washer

(2) 

3/8 I.D. lock washer

(2) 

3/8-16 nut

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