Bosch NGM5656UC Installation Instructions | Page 7

Bosch Gas Cooktop Installation Instructions - NGM5656UC.
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7

Step 2 - Replace the orifices

9

WARNING

To prevent burns, do not touch grates, burner caps 

or burners while hot. Turn the cooktop off and allow 

the burners to cool.

1. Remove the grates and burner caps and burners.
2. Remove the orifices.

Notes

The orifices require a 7 mm socket driver for 

removal/replacement. The driver will need to be 

inserted approximately 2^" (64 mm) into the burner 

cavity to reach the orifice.

To reduce the chance of the orifice being dropped 

from the socket driver, add a piece of foam tape or 

adhesive tape inside the socket.

Save the NG orifices in case there is need later to 

restore the appliance to use natural gas again.

3. Identify the correct placement of the LP gas orifices as 

detailed in the Before You Begin chapter. 
Note:  The NGMP056UC and NGMP656UC models 

have a second orifice that will be visible after the 

center burner is removed. This orifice must also be 

changed during the conversion to use LP gas.

The LP gas orifice sizes corresponding to each burner 

are shown in the following images. These numbers are 

engraved on either the top or the side of each orifice. It 

is very important to install the correct orifice size for 

each burner.

A

Trim a small piece of the foam tape provided 

with this kit (about ]" x ^" / 6 mm x 12 mm)

B

Fit this so the tape wraps against one side of 

the socket so it stays in place.

C

The tape will fit to the orifice and help prevent 

the orifice from falling out of the socket during 

extraction.

$

%

&

A

Smaller center orifice

$

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